Fix clippy lints introduced with rust 1.78

[Nogesma]

This should fix all new clippy warnings that were introduced with rust 1.78. Most of them were fixed by replacing ToString implementations with Display.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 51 lines in your changes are missing coverage. Please review.

Project coverage is 19.26%. Comparing base (e6f497e) to head (07418a9).

Files	Patch %	Lines
src/ui/components/channel_switcher.rs	0.00%	17 Missing :warning:
src/handlers/state.rs	0.00%	15 Missing :warning:
src/handlers/user_input/events.rs	0.00%	7 Missing :warning:
src/handlers/storage.rs	0.00%	3 Missing :warning:
src/twitch/channels.rs	0.00%	2 Missing :warning:
src/ui/components/chat_input.rs	0.00%	2 Missing :warning:
src/ui/components/message_search.rs	0.00%	2 Missing :warning:
src/ui/components/utils/input_widget.rs	0.00%	2 Missing :warning:
src/ui/components/following.rs	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #595 +/- ## ========================================== - Coverage 19.30% 19.26% -0.04% ========================================== Files 41 41 Lines 5076 5086 +10 ========================================== Hits 980 980 - Misses 4096 4106 +10 ```

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[Xithrius]

Thanks!