Bug 1777521 - enable bouncer-check for Firefox-esr-next-msix-latest-S…

…SL. r=gabriel DONTBUILD

Now that 102.1.0esr has shipped the Firefox-esr-next-msix-latest-SSL
product is populated in bouncer so we can enable the check.

Differential Revision: https://phabricator.services.mozilla.com/D152764

testing/mozharness/configs/releases/bouncer_firefox_esr.py

@@ -114,15 +114,15 @@
         },
         "msix-latest": {
             "product-name": "Firefox-esr-msix-latest-SSL",
-            "check_uptake": False,
+            "check_uptake": False,  # XXX enable when esr91 is EOL
             "platforms": [
                 "win",
                 "win64",
             ],
         },
         "msix-next-latest": {
             "product-name": "Firefox-esr-next-msix-latest-SSL",
-            "check_uptake": False,
+            "check_uptake": True,
             "platforms": [
                 "win",
                 "win64",