UI Event transactions for clicks GA

[philipphofmann]

Description

• [x] https://github.com/getsentry/sentry-cocoa/pull/1784
• [x] Fix transaction name issue mentioned https://github.com/getsentry/sentry-cocoa/pull/1784#discussion_r876755736
• [x] https://github.com/getsentry/sentry-docs/pull/5098
• [x] https://github.com/getsentry/sentry-docs/pull/5100
• [ ] Validate feature by looking at customers data.
• [ ] Remove experimental note on docs.

We can only turn this on per default in the next major https://github.com/getsentry/sentry-cocoa/issues/1968.

[github-actions[bot]]

This issue has gone three weeks without activity. In another week, I will close it.

But! If you comment or otherwise update it, I will reset the clock, and if you label it Status: Backlog or Status: In Progress, I will leave it alone ... forever!

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"A weed is but an unloved flower." ― Ella Wheeler Wilcox 🥀

[philipphofmann]

Is going to be on by default in 8.0.0.