fix: prevent unnecessary MCP server refresh on settings save (#6772) … #13440

Job	Run time
check-translations	40s
knip	45s
compile	2m 4s
platform-unit-test (windows-latest)	6m 11s
check-openrouter-api-key	2s
platform-unit-test (ubuntu-latest)	3m 36s
integration-test	7m 39s
notify-slack-on-failure	-1s
	20m 56s

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