fix: remove workflow event trigger filters

these are an attempt at a "ci usage optimization", to avoid running
CI checks where they would not really matter

however, they have the side effect of not running CI checks all the time
we want them to (like, when we do i18n_sync...) so I want to simplify our
CI config and get i18n_sync running CI automatically

.github/workflows/lint.yml

@@ -8,30 +8,7 @@ on:
         required: false
         type: string
   pull_request:
-    branches:
-      - '**'
-    paths:
-      - '.github/workflows/**'
-      - 'AnkiDroid/**'
-      - 'api/**'
-      - 'lint-rules/**'
-      - 'annotations/**'
-      - '**/*.gradle'
-      - 'gradle/**'
   push:
-    branches:
-      - main
-      - i18n_sync
-      - dependency-updates
-      - 'release**'
-    paths:
-      - '.github/workflows/**'
-      - 'AnkiDroid/**'
-      - 'api/**'
-      - 'lint-rules/**'
-      - 'annotations/**'
-      - '**/*.gradle'
-      - 'gradle/**'
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}

.github/workflows/tests_emulator.yml

@@ -8,30 +8,7 @@ on:
         required: false
         type: string
   pull_request:
-    branches:
-      - '**'
-    paths:
-      - '.github/workflows/**'
-      - 'AnkiDroid/**'
-      - 'api/**'
-      - 'lint-rules/**'
-      - 'annotations/**'
-      - '**/*.gradle'
-      - 'gradle/**'
   push:
-    branches:
-      - main
-      - i18n_sync
-      - dependency-updates
-      - 'release**'
-    paths:
-      - '.github/workflows/**'
-      - 'AnkiDroid/**'
-      - 'api/**'
-      - 'lint-rules/**'
-      - 'annotations/**'
-      - '**/*.gradle'
-      - 'gradle/**'
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}

.github/workflows/tests_unit.yml

@@ -8,30 +8,7 @@ on:
         required: false
         type: string
   pull_request:
-    branches:
-      - '**'
-    paths:
-      - '.github/workflows/**'
-      - 'AnkiDroid/**'
-      - 'api/**'
-      - 'lint-rules/**'
-      - 'annotations/**'
-      - '**/*.gradle'
-      - 'gradle/**'
   push:
-    branches:
-      - main
-      - i18n_sync
-      - dependency-updates
-      - 'release**'
-    paths:
-      - '.github/workflows/**'
-      - 'AnkiDroid/**'
-      - 'api/**'
-      - 'lint-rules/**'
-      - 'annotations/**'
-      - '**/*.gradle'
-      - 'gradle/**'
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}