Remove `AnalyzeUseNewUpload` FF and make its behaviour the default #11058

Job	Run time
analyze-other (actions)	51s
analyze-other (python)	58s
check-codeql-versions	34s
analyze-javascript (macos-14)	13m 5s
analyze-javascript (ubuntu-24.04, linked)	4m 32s
analyze-javascript (windows-2025, linked)	6m 57s
analyze-javascript (windows-2025)	7m 5s
analyze-javascript (macos-15)	9m 47s
analyze-javascript (ubuntu-22.04, linked)	4m 21s
analyze-javascript (ubuntu-22.04)	4m 28s
analyze-javascript (windows-2022, linked)	5m 55s
analyze-javascript (macos-15, linked)	8m 35s
analyze-javascript (macos-14, linked)	9m 12s
analyze-javascript (windows-2022)	6m 21s
analyze-javascript (ubuntu-24.04)	4m 35s
	1h 27m 16s

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