Make sure instances show in the correct project

[seadowg]

Closes #6124

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

The instances just needed qualified by project in the data service so they don't end up in the wrong place.

We probably also want to do the same rework for the counts in InstancesDataService, but we get away with them being non project specific right now because we always update them when viewing the Main Menu. I'd also like to get #6158 merged before making changes like that as it should introduce better structuring for data services and make them easier to test.

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?

The code changed really only affects the saved form delete page so that's the main thing to concentrate on when testing.

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

[srujner]

Tested with Success!

Verified on device with Android 13

Verified cases:

• Issue Sent form in one project appear in another project in "Delete form- Saved forms" #6124 is no longer reproducing;
• Regression check on the Delete Form -> Saved Forms;
• Switching between projects, adding duplicated projects;
• Autosend option off/on;
• Don't keep activities enabled/disabled;
• Minimize the app, rotate the screen.

[dbemke]

Tested with Success!

Verified on device with Android 10