[Playground]: enable multi file flag for multi file examples

[VladMatyunin]

This PR performs the following:

• trigger Deploy examples Github action to test
• fixes examples that consist of multiple files but doesn't have corresponding flag enabled

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[VladMatyunin]

R: @pabloem

[VladMatyunin]

This PR depends on the following PR: #22300
Please merge it after #22300 is merged

[github-actions]

Stopping reviewer notifications for this pull request: review requested by someone other than the bot, ceding control