change(android): clean up site deep-link configuration

[jahorton]

Build-bot: skip release:android

Follows up on this comment chain: #16392 (comment)

User Testing

GROUP_API_28: Perform these tests on devices with Android API 28 (Android 9).
GROUP_API_30: Perform these tests on devices with Android API 30 (Android 11).
GROUP_API_33: Perform these tests on devices with Android API 33+ (Android 13).

TEST_CHROME_SEARCH_DOWNLOAD: With Keyman for Android installed on the test device, verify that the keyboard-search result pages' big green buttons auto-redirect to the Keyman app.

1. Navigate to keyman.com
2. Use the keyboard search (pick any language / keyboard) and select a result.
3. From that result's page, click the big green "Install Keyboard" button.
4. Verify that Keyman for Android automatically opens and attempts to install the keyboard package.

[keymanapp-test-bot]

User Test Results

Test specification and instructions

• ⬜ GROUP_API_28: Perform these tests on devices with Android API 28 (Android 9).

  • ⬜ TEST_CHROME_SEARCH_DOWNLOAD (OPEN)

• ⬜ GROUP_API_30: Perform these tests on devices with Android API 30 (Android 11).

  • ⬜ TEST_CHROME_SEARCH_DOWNLOAD (OPEN)

• ⬜ GROUP_API_33: Perform these tests on devices with Android API 33+ (Android 13).

  • ⬜ TEST_CHROME_SEARCH_DOWNLOAD (OPEN)

Results Template

# Test Results

### GROUP_API_28: Perform these tests on devices with Android API 28 (Android 9).

* **TEST_CHROME_SEARCH_DOWNLOAD (OPEN):** notes

### GROUP_API_30: Perform these tests on devices with Android API 30 (Android 11).

* **TEST_CHROME_SEARCH_DOWNLOAD (OPEN):** notes

### GROUP_API_33: Perform these tests on devices with Android API 33+ (Android 13).

* **TEST_CHROME_SEARCH_DOWNLOAD (OPEN):** notes

Test Artifacts

• Android
  • KeyboardHarness apk
  • KMSample1 apk
  • KMSample2 apk

[mcdurdin]

LGTM, nice cleanup.

Noting that this merges two <intent-filter>s which both related to keyman.com (and keyman-staging.com). The outcome does not change, and this makes the manifest somewhat easier to read.