chore: merge dev into hazre/feat/phosphor-icons-migration

Author: hazre

.changeset/add_location_command.md

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+---
+default: minor
+---
+
+Add /location sharing command, and a /sharemylocation command.

.changeset/add_maskable_icons_for_pwas.md

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+---
+default: patch
+---
+
+Fix broken link to Sliding Sync known issues — now points to SableClient/Sable#39 instead of the old repository.

.changeset/fix-encrypted-pmp.md

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+---
+default: note
+---
+
+moved the setting for filtering pronouns by language from experimental to the appearance setting