Bug 1876700 - Add more test logs to CollectionRobot

[AndiAJ]

Summary:

• As part of the Android test hardening, to ease the debugging process, I've added test logs to the CollectionRobot
• Also converted the private variables to functions so they don't get initialized
• Removed unused functions
• Use where applicable the functions from the MatcherHelper to avoid adding unnecessary logs
• ❗There is this verifySnackBarText function which actually doesn't assert anything, only waits for an item containing text.
  Will do a separate refactoring related to these snackbar verifications as we have a function in TestHelper which is only partially used in the project and have a couple more individual functions named as verifySnackBarTextin different robots

Pull Request checklist

• Quality: This PR builds and passes detekt/ktlint checks (A pre-push hook is recommended)
• Tests: This PR includes thorough tests or an explanation of why it does not
• Changelog: This PR includes a changelog entry or does not need one
• Accessibility: The code in this PR follows accessibility best practices or does not include any user facing features

After merge

• Breaking Changes: If this is a breaking Android Components change, please push a draft PR on Reference Browser to address the breaking issues.

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GitHub Automation

https://bugzilla.mozilla.org/show_bug.cgi?id=1876700

[sv-ohorvath]

As this is a custom function, you could actually add a log inside the scroll function.

[AndiAJ]

Done !

[sv-ohorvath]

Approved, with one single comment.

[jjSDET]

lgtm