Some fixes for replay

[EboMike]

No description provided.

[sentry-io]

🔍 Existing Issues For Review

Your pull request is modifying functions with the following pre-existing issues:

📄 File: assets/js/replay.js

Function	Unhandled Issue
HTMLButtonElement.playPause	TypeError: Cannot set properties of null (setting 'innerHTML') ?(ass... Event Count: 3 Affected Users: 1
playEvents	TypeError: Cannot set properties of null (setting 'innerHTML') ?(ass... Event Count: 2 Affected Users: 1

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