Split translations between EW and shared components (#31441)

* Split translations between EW and shared components

Uses update module API with global TranslationKey type that can be
overridden.

WIP.

* Removed the wrong script (for now)

* Add the type files

* Add shared components i18n file

* More i18n strings

* Add i18n check for shared conmponents

* Needs a different name

* rerun i18n for merge from develop, fix test

* Move translated strings to shared components file

NB. there are lots of removed strings for a few languages where we
seem to have hit a localazy bug or something where the key/value
for plurals got switched, making the translations invalid. They've
been missing for a while so I'm removing them rather than trying to
restore them,

* Add shared components files to localazy

* Merge element web & shared component translations

for the built app

* Use right translations for shared component tests

and fix missign en_EN strings

* Pull shared components translations too

* Fix/disable warnings

* We can now remove the build:res call

...right? (right?)

* Remove webpack import for languages index

..and just load it using a relative path which we do for the individual
language files and also did anyway for the index because even in non-test
it was an object, not a string, so we always usesd the 'test' code path.

* Make the storybook language selector work

...without referring to the parent app's files

* Revert unnecessary yarn lock change

* Typo

Co-authored-by: Michael Telatynski <7t3chguy@gmail.com>

* Add comment on why we use merge

* Fix localazy download config

to actually put the translations in the right place

* Better typescript syntax

Co-authored-by: Michael Telatynski <7t3chguy@gmail.com>

* Watch both translations files

---------

Co-authored-by: Michael Telatynski <7t3chguy@gmail.com>

.github/workflows/static_analysis.yaml

@@ -41,8 +41,8 @@ jobs:
             - name: Typecheck Shared Components
               run: "yarn --cwd packages/shared-components run lint:types"
 
-    i18n_lint:
-        name: "i18n Check"
+    i18n_lint_ew:
+        name: "i18n Check (Element Web)"
         uses: matrix-org/matrix-web-i18n/.github/workflows/i18n_check.yml@main
         permissions:
             pull-requests: read
@@ -59,6 +59,15 @@ jobs:
                 devtools|settings|elementCallUrl
                 labs|sliding_sync_description
 
+    i18n_lint_shared_components:
+        name: "i18n Check (Shared Components)"
+        uses: matrix-org/matrix-web-i18n/.github/workflows/i18n_check.yml@main
+        permissions:
+            pull-requests: read
+        with:
+            path: "packages/shared-components"
+            hardcoded-words: "Element"
+
     rethemendex_lint:
         name: "Rethemendex Check"
         runs-on: ubuntu-24.04