fix(reactions): fix reactions blocked on readonly chats

[jrainville]

What does the PR do

Fixes #19822

Affected areas

MessageView

Architecture compliance

• I am familiar with the application architecture and agreed good practices.
  My PR is consistent with this document: QML Architecture Guidelines

Screencapture of the functionality

fix-reactions.webm

Impact on end user

Fixes the issue

How to test

• Go to a readonly channel
• click on reactions that were posted by someone else

Risk

Low

[status-im-auto]

Jenkins Builds

Click to see older builds (14)

❔	Commit	#️⃣	Finished (UTC)	Duration	Platform	Result
✔️	ae73ce8d	1	2026-01-29 16:02:41	~14 min	android/arm64	🤖apk 📲
✔️	f7e78ce	1	2026-01-29 16:03:22	~15 min	ios/aarch64	📱ipa 📲
✔️	f7e78ce	1	2026-01-29 16:04:09	~16 min	tests/nim	📄log
✔️	f7e78ce	1	2026-01-29 16:06:17	~18 min	macos/aarch64	🍎dmg
❌	f7e78ce	1	2026-01-29 16:07:31	~19 min	macos/aarch64-nwaku	📄log
✖️	f7e78ce	PR19827	2026-01-29 16:09:22	~6 min	tests/e2e-android	📦pkg
✔️	f7e78ce	1	2026-01-29 16:13:01	~25 min	tests/ui	📄log
✔️	f7e78ce	1	2026-01-29 16:13:53	~26 min	linux/x86_64-nwaku	📦tgz
✔️	f7e78ce	1	2026-01-29 16:14:08	~26 min	linux/x86_64	📦tgz
✔️	f7e78ce	1	2026-01-29 16:23:58	~35 min	windows/x86_64	💿exe
✔️	f7e78ce	9459	2026-01-29 16:32:24	~18 min	tests/e2e	📊rpt
✖️	f7e78ce	1594	2026-01-29 16:47:10	~23 min	tests/e2e-windows	📊rpt
✖️	f7e78ce	PR19827	2026-01-30 05:54:41	~23 min	tests/e2e-android	📦pkg
✖️	f7e78ce	PR19827	2026-01-31 06:08:52	~39 min	tests/e2e-android	📦pkg

❔	Commit	#️⃣	Finished (UTC)	Duration	Platform	Result
✔️	992643a1	2	2026-01-30 05:30:57	~12 min	android/arm64	🤖apk 📲
✔️	2f1a4a0d	3	2026-01-31 05:29:35	~11 min	android/arm64	🤖apk 📲