[Android] Add new tasks for subset of tests to run API 33 (flutter#4974)

Adds new tasks to create shards to run a subset of Android platform tests on API 33 AVD tests when the update to run tests on AVDs with API 34 lands due to test failures on a subset of plugins. Prequel PR to flutter#4820.

.ci.yaml

@@ -380,6 +380,34 @@ targets:
           {"dependency": "android_virtual_device", "version": "33"}
         ]
 
+  - name: Linux_android android_platform_tests_api_33_shard_1 master
+    recipe: packages/packages
+    timeout: 60
+    bringup: true
+    properties:
+      target_file: android_platform_tests_api_33.yaml
+      channel: master
+      version_file: flutter_master.version
+      package_sharding: "--shardIndex 0 --shardCount 2"
+      dependencies: >-
+        [
+          {"dependency": "android_virtual_device", "version": "33"}
+        ]
+
+  - name: Linux_android android_platform_tests_api_33_shard_2 master
+    recipe: packages/packages
+    timeout: 60
+    bringup: true
+    properties:
+      target_file: android_platform_tests_api_33.yaml
+      channel: master
+      version_file: flutter_master.version
+      package_sharding: "--shardIndex 1 --shardCount 2"
+      dependencies: >-
+        [
+          {"dependency": "android_virtual_device", "version": "33"}
+        ]
+
   - name: Linux_android android_platform_tests_shard_1 stable
     recipe: packages/packages
     presubmit: false
@@ -464,6 +492,34 @@ targets:
           {"dependency": "android_virtual_device", "version": "33"}
         ]
 
+  - name: Linux_android android_platform_tests_api_33_shard_1 stable
+    recipe: packages/packages
+    timeout: 60
+    bringup: true
+    properties:
+      target_file: android_platform_tests_api_33.yaml
+      channel: master
+      version_file: flutter_stable.version
+      package_sharding: "--shardIndex 0 --shardCount 2"
+      dependencies: >-
+        [
+          {"dependency": "android_virtual_device", "version": "33"}
+        ]
+
+  - name: Linux_android android_platform_tests_api_33_shard_2 stable
+    recipe: packages/packages
+    timeout: 60
+    bringup: true
+    properties:
+      target_file: android_platform_tests_api_33.yaml
+      channel: master
+      version_file: flutter_stable.version
+      package_sharding: "--shardIndex 1 --shardCount 2"
+      dependencies: >-
+        [
+          {"dependency": "android_virtual_device", "version": "33"}
+        ]
+
   # Device versions of Android integration tests, run via FTL.
   # TODO(stuartmorgan): Revisit whether physical device tests are redundant once
   # we have more data about emulator tests; see

.ci/targets/android_platform_tests_api_33_avd.yaml

@@ -0,0 +1,30 @@
+# Same as android_platform_tests.yaml with only packages currently requiring
+# Android 33 due to test failures caused by running on Android 34 AVDs.
+tasks:
+  - name: prepare tool
+    script: .ci/scripts/prepare_tool.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
+  - name: download Dart and Android deps
+    script: script/tool_runner.sh
+    infra_step: true
+    args: ["fetch-deps", "--android", "--supporting-target-platforms-only", "--filter-packages-to=script/configs/still_requires_api_33_avd.yaml"]
+  - name: build examples
+    script: script/tool_runner.sh
+    args: ["build-examples", "--apk", "--filter-packages-to=script/configs/still_requires_api_33_avd.yaml"]
+  - name: lint
+    script: script/tool_runner.sh
+    args: ["lint-android", "--filter-packages-to=script/configs/still_requires_api_33_avd.yaml"]
+  # Native unit and native integration are split into two steps to allow for
+  # different exclusions.
+  # TODO(stuartmorgan): Eliminate the native unit test exclusion, and combine
+  # these steps.
+  - name: native unit tests
+    script: script/tool_runner.sh
+    args: ["native-test", "--android", "--no-integration", "--filter-packages-to=script/configs/still_requires_api_33_avd.yaml"]
+  - name: native integration tests
+    script: script/tool_runner.sh
+    args: ["native-test", "--android", "--no-unit", "--filter-packages-to=script/configs/still_requires_api_33_avd.yaml"]
+  - name: drive examples
+    script: script/tool_runner.sh
+    args: ["drive-examples", "--android", "--filter-packages-to=script/configs/still_requires_api_33_avd.yaml"]
+

script/configs/still_requires_api_33_avd.yaml

@@ -0,0 +1,4 @@
+# Running the somes tests from these packages on an AVD with Android 34 causes failures.
+- file_selector
+- quick_actions
+- webview_flutter