feat: hide empty record group default true

[magrinj]

Fix #8969

Previously we were putting hide default record group to false in record group mode.
Also the mode was saved in the current view by changing the visibility boolean of each record group.
As we want to hide by default, this PR instead is using a different logic so it's totally based on the front-end side.

[greptile-apps]

PR Summary

Changes visibility management for empty record groups by setting default hide state to true and simplifying the logic to use frontend-only toggle state instead of persisting visibility in views.

• Changed default value to true in recordIndexRecordGroupHideComponentState.ts to hide empty groups by default
• Added empty group check in visibleRecordGroupIdsComponentSelector.ts using recordIds.length === 0 condition
• Simplified visibility toggle in useRecordGroupVisibility.ts by removing complex state management and view persistence
• Removed redundant visibility check in visibleRecordGroupIdsComponentSelector.ts that could cause maintenance issues

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[charlesBochet]

@magrinj Code looks great

Testing the functionality:

• I go to Opportunities > Table View
• I click on Kanban View

Page is blank:

Then I go to Option > Untoggle hide groups ==> works as expected, Toggle hide groups ==> works as expected

So maybe an issue in initial loading