Fix updating Snackbar position

[grzesiek2010]

Closes #7197
Closes #7201

Why is this the best possible solution? Were any other approaches considered?

How does this change affect users? Describe intentional changes to behavior and behavior that could have accidentally been affected by code changes. In other words, what are the regression risks?

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Before submitting this PR, please make sure you have:

• added or modified tests for any new or changed behavior
• run ./gradlew connectedAndroidTest (or ./gradlew testLab) and confirmed all checks still pass
• added a comment above any new strings describing it for translators
• added any new strings with date formatting to DateFormatsTest
• verified that any code or assets from external sources are properly credited in comments and/or in the about file.
• verified that any new UI elements use theme colors. UI Components Style guidelines

[grzesiek2010]

@dbemke as you’ve already noticed, it’s not easy to handle the positioning of Snackbars correctly, so I’m marking this PR as needs testing early to see if the solution seems promising. Please take a look when you have some time.