docs: fix typos and copy-paste error in LSP/BSP comments

[Avicennasis]

Summary

Fix 13 documentation issues across 4 files in the LSP and BSP protocol types:

WorkDoneProgress.swift:

• Fix "subsequent in report" → "subsequent report" (appeared in both WorkDoneProgressBegin and WorkDoneProgressReport)
• Fix "don't support control the" → "don't support controlling the"
• Fix "indicating to for example indicate" → "indicating, for example,"
• Fix incorrect debugDescription in WorkDoneProgressEnd decoder: referenced WorkDoneProgressReport instead of WorkDoneProgressEnd

CompletionRequest.swift:

• Fix "has trigger code complete" → "has triggered code completion"

SignatureHelpRequest.swift:

• Fix "multiple signature but" → "multiple signatures but"
• Fix "is ignore if" → "is ignored if"
• Fix "as no signatures" → "has no signatures"

TaskFinishNotification.swift:

• Fix extra backtick in `build/taskStart` reference
• Fix "The was not included" → "The test was not included" in TestStatus.skipped
• Fix trailing space before period in CompileReportData.originId deprecation comment
• Add missing period to TestReportData.originId deprecation comment

No functional changes — all fixes are in doc comments except the debugDescription string correction in WorkDoneProgressEnd, which fixes a potentially misleading error message.