Show Python welcome view when python not a dependency #3782

Job	Run time
vscode / native (macos-latest)	1m 2s
vscode / native (windows-latest)	3m 20s
vscode / native (ubuntu-latest)	2m 14s
build / build	1m 48s
home-view-unit-tests / lint	20s
agent / native (macos-latest)	43s
agent / native (windows-latest)	1m 6s
agent / native (ubuntu-latest)	35s
lint / lint	1m 32s
archive / archive	53s
package / vscode	4m 2s
upload / upload	2m 37s
vscode-ui / ui-tests (ubuntu-latest)	7m 46s
	27m 58s

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