ChatSuggestionVC is getting redisplayed and commands shortcut not working

[laevandus]

🔗 Issue Links

Resolves ios-issues-tracking/826

🎯 Goal

• Do not dismiss and show the suggestion view on every character change
• Optimise suggestion view height updates
• / not showing suggestions

🎨 Showcase

Before	After

🧪 Manual Testing Notes

Issue 1: mentioning users

1. Open a channel with many members
2. Try to mention someone which triggers showing the suggestion view
   Observe that the suggestion view is updated correctly (is open until there are matches, gets closed when no matches etc)

Issue 2: / command not showing suggestions

1. Type / and try to interact with the giphy command
   Result: Command suggestions appear.

☑️ Contributor Checklist

• I have signed the Stream CLA (required)
• This change follows zero ⚠️ policy (required)
• This change should be manually QAed
• Changelog is updated with client-facing changes
• New code is covered by unit tests
• Comparison screenshots added for visual changes
• Affected documentation updated (docusaurus, tutorial, CMS)

[Stream-iOS-Bot]

StreamChat XCMetrics

target	metric	benchmark	branch	performance	status
MessageList	Hitches total duration	10 ms	1.67 ms	83.3% 🔼	🟢
	Duration	2.6 s	2.55 s	1.92% 🔼	🟢
	Hitch time ratio	4 ms per s	0.66 ms per s	83.5% 🔼	🟢
	Frame rate	79 fps	78.64 fps	0.46% 🔼	🟢
	Number of hitches	1	0.2	80.0% 🔼	🟢
ChannelList	Hitches total duration	12.5 ms	0.0 ms	100.0% 🔼	🟢
	Duration	2.6 s	0.82 s	68.46% 🔼	🟢
	Hitch time ratio	5 ms per s	0.0 ms per s	100.0% 🔼	🟢
	Frame rate	76 fps	63.7 fps	16.18% 🔼	🟢
	Number of hitches	1.2	0.0	100.0% 🔼	🟢

[github-actions]

	1 Warning
⚠️	The changes should be manually QAed before the Pull Request will be merged

Generated by 🚫 Danger

[nuno-vieira]

LGTM! ✅

[sonarcloud]

Quality Gate passed

Issues
103 New issues
0 Accepted issues

Measures
0 Security Hotspots
84.6% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[testableapple]

QAed, looks good 👍
The only open question left is regarding an old channel with multiple users with no names. Discussing in Slack atm.