fix: refine stability precedence to support standard prerelease sorting

[sameerforge]

Refinement of Metadata Precedence Logic
This follow-up PR adjusts the build metadata comparison logic to ensure stability-aware precedence (GA > RC) only applies when comparing numeric segments to alphanumeric ones.

Verified Improvements:
Natural Sorting: vmware.10-fips now correctly ranks higher than vmware.9-fips.

Stability: 3.4.0+v1.33 (Stable) now correctly ranks higher than 3.4.0+v1.33-rc.2.

Compatibility: Standard pre-release ordering (e.g., 0.0.1-pre.1 < 0.0.1-rc.0) is preserved, fixing a regression found in vendir.

Validation :
All 38+ existing unit tests, alongside new edge-case coverage Passed ✅

Current changeset Validation : 
➜  v4 git:(topic/sameerforge/follow-up-semver-fix) go test -v .                                                        
=== RUN   TestJSONMarshal
--- PASS: TestJSONMarshal (0.00s)
=== RUN   TestJSONUnmarshal
--- PASS: TestJSONUnmarshal (0.00s)
=== RUN   TestParseComparator
--- PASS: TestParseComparator (0.00s)
=== RUN   TestSplitAndTrim
--- PASS: TestSplitAndTrim (0.00s)
=== RUN   TestSplitComparatorVersion
--- PASS: TestSplitComparatorVersion (0.00s)
=== RUN   TestBuildVersionRange
--- PASS: TestBuildVersionRange (0.00s)
=== RUN   TestSplitORParts
--- PASS: TestSplitORParts (0.00s)
=== RUN   TestGetWildcardType
--- PASS: TestGetWildcardType (0.00s)
=== RUN   TestCreateVersionFromWildcard
--- PASS: TestCreateVersionFromWildcard (0.00s)
=== RUN   TestIncrementMajorVersion
--- PASS: TestIncrementMajorVersion (0.00s)
=== RUN   TestIncrementMinorVersion
--- PASS: TestIncrementMinorVersion (0.00s)
=== RUN   TestExpandWildcardVersion
--- PASS: TestExpandWildcardVersion (0.00s)
=== RUN   TestVersionRangeToRange
--- PASS: TestVersionRangeToRange (0.00s)
=== RUN   TestRangeAND
--- PASS: TestRangeAND (0.00s)
=== RUN   TestRangeOR
--- PASS: TestRangeOR (0.00s)
=== RUN   TestParseRange
--- PASS: TestParseRange (0.00s)
=== RUN   TestMustParseRange
--- PASS: TestMustParseRange (0.00s)
=== RUN   TestMustParseRange_panic
--- PASS: TestMustParseRange_panic (0.00s)
=== RUN   TestStringer
--- PASS: TestStringer (0.00s)
=== RUN   TestParse
--- PASS: TestParse (0.00s)
=== RUN   TestParseTolerant
--- PASS: TestParseTolerant (0.00s)
=== RUN   TestMustParse
--- PASS: TestMustParse (0.00s)
=== RUN   TestMustParse_panic
--- PASS: TestMustParse_panic (0.00s)
=== RUN   TestValidate
--- PASS: TestValidate (0.00s)
=== RUN   TestFinalizeVersionMethod
--- PASS: TestFinalizeVersionMethod (0.00s)
=== RUN   TestCompare
--- PASS: TestCompare (0.00s)
=== RUN   TestWrongFormat
--- PASS: TestWrongFormat (0.00s)
=== RUN   TestWrongTolerantFormat
--- PASS: TestWrongTolerantFormat (0.00s)
=== RUN   TestCompareHelper
--- PASS: TestCompareHelper (0.00s)
=== RUN   TestIncrements
--- PASS: TestIncrements (0.00s)
=== RUN   TestPreReleaseVersions
--- PASS: TestPreReleaseVersions (0.00s)
=== RUN   TestBuildMetaDataVersions
--- PASS: TestBuildMetaDataVersions (0.00s)
=== RUN   TestNewHelper
--- PASS: TestNewHelper (0.00s)
=== RUN   TestMakeHelper
--- PASS: TestMakeHelper (0.00s)
=== RUN   TestFinalizeVersion
--- PASS: TestFinalizeVersion (0.00s)
=== RUN   TestEdgeCases_NaturalSortAndMetadata
--- PASS: TestEdgeCases_NaturalSortAndMetadata (0.00s)
=== RUN   TestSort
--- PASS: TestSort (0.00s)
=== RUN   TestScanString
--- PASS: TestScanString (0.00s)
PASS
ok      github.com/carvel-dev/semver/v4 0.502s

Validation with Vendir Test :
Tests Passed ✅

➜  vendir git:(develop) ✗ go test -v ./pkg/vendir/versions/                                   

=== RUN   TestSemverOrder
--- PASS: TestSemverOrder (0.00s)
=== RUN   TestSemverFilter
--- PASS: TestSemverFilter (0.00s)
=== RUN   TestSemverWithoutPrereleases
--- PASS: TestSemverWithoutPrereleases (0.00s)
=== RUN   TestSemverWithPrereleases
--- PASS: TestSemverWithPrereleases (0.00s)
=== RUN   TestSemverWithPrereleaseIdentifiers
--- PASS: TestSemverWithPrereleaseIdentifiers (0.00s)
=== RUN   TestSemverWithBuildMetadata
--- PASS: TestSemverWithBuildMetadata (0.00s)
=== RUN   TestSemverWithBuildMetadataAndConstraint
--- PASS: TestSemverWithBuildMetadataAndConstraint (0.00s)
=== RUN   TestHighestVersionWithConstraints
--- PASS: TestHighestVersionWithConstraints (0.00s)
PASS
ok      carvel.dev/vendir/pkg/vendir/versions   (cached)

[sameerforge]

@joaopapereira Please review this follow-up change for #5

[sameerforge]

@joaopapereira Please review this follow-up change for #5

[ramineni]

1. we are only checking for '-' for alpha only, not for beta or rc . We have to check for '-' as pre-requisite for all the pre release labels.

2. why are we restricting to check only rc , alpha, beta ? there can be other labels (pre etc) which can exist? we can do string comparison to evaluate them?

[sameerforge]

Updated. Logic now generically uses hyphens to detect stability label.

[ramineni]

this is the comparison for alphanumeric vs alpha numeric .

[sameerforge]

Corrected. Updated the description to clarify this compares a numeric segment (1) vs an alphanumeric segment (beta) per SemVer precedence.

[ramineni]

this example shows with '-' ?

[sameerforge]

Updated Description. The separator hyphen is not part of the segment itself