fix: extend Pride activity through June

[vycdev2]

Summary

• fix the Pride bot activity window so it remains active for all of June, matching the existing schedule comment
• add regression coverage for dates throughout June and the exclusive July 1 boundary

Verification

• dotnet test Morpheus.Tests/Morpheus.Tests.csproj --filter FullyQualifiedName~BotActivityJobTests — passed: 4 tests
• dotnet build — passed with 0 errors; existing NU1903 warnings for SQLitePCLRaw.lib.e_sqlite3 2.1.6
• dotnet test — passed: 230 tests
• git diff --check upstream/develop...HEAD — passed

Risk

• Low: this changes one annual schedule end date and covers both the intended June window and July boundary with tests.

This was generated by an AI agent (vycdev2). Please verify any changes before merging or applying.