fix(tabs): hide tab bar on keyboard open/close

[damiant]

Summary

This PR updates the tabs behavior to hide the tab bar when the keyboard opens and closes.

Changes

• Adjusted tab bar visibility in response to keyboard state changes
• Ensures the tab bar is hidden appropriately while the keyboard is active

Why

• Improves the user experience by preventing the tab bar from interfering with keyboard-driven interactions
• Provides a cleaner layout when users are focused on text input

Notes

• Change is scoped to tab navigation behavior
• No additional functional changes are included in this PR