Bug 1989205 - Update recommended.xpi file to fix a test (permafailure) for ESR. r=robwu a=dmeehan DONTBUILD

The new XPI file has been generated from this PR [1], and signed by the
AMO -dev instance (which uses the nonprod cert). FTR since this add-on
needs a recommendation state, we must add the add-on to the "By Firefox"
promoted group via the AMO admin before getting the version signed.

Before:

```
$ xpidump old.xpi
MANIFEST:
  ID        : N/A
  Version   : 2.0
  Enterprise: No

RECOMMENDATION:
  [Line]

SIGNATURES:
  PKCS7:
    └── PRESENT / PRODUCTION / SHA-1 / REGULAR ADD-ON
    └── Certificates:
	└── Common Name         (CN): signingca1.addons.mozilla.org
	    Organizational Unit (OU): Mozilla AMO Production Signing Service
	    End Date                : 2025-04-04T00:00:00Z
	└── Common Name         (CN): {811d77f1-f306-4187-9251-b4ff99bad60b}
	    Organizational Unit (OU): Production
	    End Date                : 2030-09-15T16:50:45Z
  COSE:
    └── PRESENT / PRODUCTION / ES256 / REGULAR ADD-ON
    └── Certificates:
	└── Common Name         (CN): signingca1.addons.mozilla.org
	    Organizational Unit (OU): Mozilla AMO Production Signing Service
	    End Date                : 2025-04-04T00:00:00Z
	└── Common Name         (CN): {811d77f1-f306-4187-9251-b4ff99bad60b}
	    Organizational Unit (OU): Production
	    End Date                : 2030-09-15T16:50:45Z
```

After:

```
$ xpidump new.xpi
MANIFEST:
  ID        : recommended-line@test.mozilla.org
  Version   : 3.0
  Enterprise: No

RECOMMENDATION:
  [Line]

SIGNATURES:
  PKCS7:
    └── PRESENT / STAGING / SHA-256 / REGULAR ADD-ON
    └── Certificates:
	└── Common Name         (CN): cas-intermediate-amo-ca-staging
	    Organizational Unit (OU): Mozilla Staging Signing Service
	    End Date                : 2050-12-31T00:00:00Z
	└── Common Name         (CN): recommended-line@test.mozilla.org
	    Organizational Unit (OU): Production
	    End Date                : 2035-09-17T07:29:49Z
  COSE:
    └── PRESENT / STAGING / ES256 / REGULAR ADD-ON
    └── Certificates:
	└── Common Name         (CN): cas-intermediate-amo-ca-staging
	    Organizational Unit (OU): Mozilla Staging Signing Service
	    End Date                : 2050-12-31T00:00:00Z
	└── Common Name         (CN): recommended-line@test.mozilla.org
	    Organizational Unit (OU): Production
	    End Date                : 2035-09-17T07:29:49Z
```

[1]: https://github.com/mozilla/mozilla-central-test-xpis/pull/15

Differential Revision: https://phabricator.services.mozilla.com/D265576

toolkit/mozapps/extensions/test/xpinstall/browser_doorhanger_installs.js

@@ -577,7 +577,11 @@ var TESTS = [
 
   async function test_recommendedPostDownload() {
     await SpecialPowers.pushPrefEnv({
-      set: [["extensions.postDownloadThirdPartyPrompt", true]],
+      set: [
+        ["extensions.postDownloadThirdPartyPrompt", true],
+        // recommended.xpi is signed with AMO staging signature.
+        ["xpinstall.signatures.dev-root", true],
+      ],
     });
 
     let triggers = encodeURIComponent(
@@ -594,7 +598,7 @@ var TESTS = [
 
     let notificationPromise = acceptAppMenuNotificationWhenShown(
       "addon-installed",
-      "{811d77f1-f306-4187-9251-b4ff99bad60b}"
+      "recommended-line@test.mozilla.org"
     );
 
     installDialog.button.click();
@@ -604,7 +608,7 @@ var TESTS = [
     is(installs.length, 0, "Should be no pending installs");
 
     let addon = await AddonManager.getAddonByID(
-      "{811d77f1-f306-4187-9251-b4ff99bad60b}"
+      "recommended-line@test.mozilla.org"
     );
     await addon.uninstall();