feat: reorder filter options and adjust no friends messages in ConnectTabContent + bug fixes

[JothishKamal]

Pull Request Type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no API changes)
• Build related changes
• Documentation content changes
• Other

Purpose

• WHAT is this PR for?
  Reorders the chips in ConnectScreenContent/Friends for better UX, refactors active friends list handling, improves Connect screen filters and messages, and cleans up code style.

Approach

• HOW does this change fulfill the purpose?
  Active Friends List
• Removed SharedPreferences usage for caching/updating active friends list
• Now managed fully in memory for simpler state handling

Connect Screen

• Swapped filter order: All → Available
• Updated filter logic and empty state messages for better clarity

UI/UX + Code Style

• Improved key for rendering period items in schedule
• Minor formatting and readability improvements across MainComposeApp and related components

Issue Reference: #64 #63

Does this PR introduce any new bug?

• Yes
• No
• Maybe

[dk-a-dev]

Check existing issues as well!!

[JothishKamal]

Check existing issues as well!!

Added fix for issues

[dk-a-dev]

LGTM