feat(notifications): user-configurable font size for notification summary and body (#2461)

* feat(notifications): add user-configurable font size for summary and body in notification popups

* feat: add Unset for falling back to previous default values

* fix: prek hook errors

---------

Co-authored-by: Klesh Wong <kleshwong@gmail.com>

quickshell/Common/SettingsData.qml

@@ -515,6 +515,8 @@ Singleton {
     property bool notepadUseMonospace: true
     property string notepadFontFamily: ""
     property real notepadFontSize: 14
+    property real notificationSummaryFontSize: Spec.SPEC.notificationSummaryFontSize.def
+    property real notificationBodyFontSize: Spec.SPEC.notificationBodyFontSize.def
     property bool notepadShowLineNumbers: false
     property real notepadTransparencyOverride: -1
     property real notepadLastCustomTransparency: 0.7

quickshell/Common/settings/SettingsSpec.js

@@ -260,6 +260,8 @@ var SPEC = {
     notepadUseMonospace: { def: true },
     notepadFontFamily: { def: "" },
     notepadFontSize: { def: 14 },
+    notificationSummaryFontSize: { def: 0 },
+    notificationBodyFontSize: { def: 0 },
     notepadShowLineNumbers: { def: false },
     notepadTransparencyOverride: { def: -1 },
     notepadLastCustomTransparency: { def: 0.7 },