fixup! MB 1: Mullvad Browser branding

TB 43776: Mark branding files for l10n merge.

browser/locales/l10n.toml

@@ -135,6 +135,18 @@ locales = [
 # This file was removed in bug 1948916. In order to keep this file in
 # repositories, we need to preserve this entry until esr115 and esr128 become
 # unsupported.
+[[paths]]
+    reference = "browser/branding/mb-alpha/locales/en-US/**"
+    l10n = "{l}browser/branding/mb-alpha/**"
+
+[[paths]]
+    reference = "browser/branding/mb-nightly/locales/en-US/**"
+    l10n = "{l}browser/branding/mb-nightly/**"
+
+[[paths]]
+    reference = "browser/branding/mb-release/locales/en-US/**"
+    l10n = "{l}browser/branding/mb-release/**"
+
 [[paths]]
     reference = "browser/extensions/formautofill/locales/en-US/**"
     l10n = "{l}browser/extensions/formautofill/**"