Remove legacy BomUploadProcessingTask

[nscuro]

Description

Removes the legacy BomUploadProcessingTask.

• Makes the new implementation (previously known as BomUploadProcessingTaskV2) the default
• Removes code related to the legacy implementation
• Removes the experimental:bom.processing.task.v2.enabled property

Addressed Issue

N/A

Additional Details

N/A

Checklist

• I have read and understand the contributing guidelines
• This PR fixes a defect, and I have provided tests to verify that the fix is effective
• This PR implements an enhancement, and I have provided tests to verify that it works as intended
• This PR introduces changes to the database model, and I have added corresponding update logic
• This PR introduces new or alters existing behavior, and I have updated the documentation accordingly

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ -0.30% (target: -1.00%)	✅ 89.66% (target: 70.00%)

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (94a7378)	22015	16735	76.02%
Head commit (2d8769c)	21630 (-385)	16377 (-358)	75.71% (-0.30%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#3722)	406	364	89.66%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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