use separate action for setting Theme V2

src/components/settings_modal/tabs/theme_tab/theme_tab.js

@@ -499,18 +499,14 @@ export default {
       }
     },
     setCustomTheme () {
-      this.$store.dispatch('setOption', {
-        name: 'customTheme',
-        value: {
+      this.$store.dispatch('setThemeV2', {
+        customTheme: {
           ignore: true,
           themeFileVersion: this.selectedVersion,
           themeEngineVersion: CURRENT_VERSION,
           ...this.previewTheme
-        }
-      })
-      this.$store.dispatch('setOption', {
-        name: 'customThemeSource',
-        value: {
+        },
+        customThemeSource: {
           themeFileVersion: this.selectedVersion,
           themeEngineVersion: CURRENT_VERSION,
           shadows: this.shadowsLocal,

src/modules/config.js

@@ -255,6 +255,11 @@ const config = {
         revert
       })
     },
+    setThemeV2 ({ commit, dispatch }, { customTheme, customThemeSource }) {
+      commit('setOption', { name: 'customTheme', value: customTheme })
+      commit('setOption', { name: 'customThemeSource', value: customThemeSource })
+      dispatch('setTheme', { themeData: customThemeSource, recompile: true })
+    },
     setOption ({ commit, dispatch, state }, { name, value }) {
       const exceptions = new Set([
         'useStreamingApi'
@@ -272,6 +277,7 @@ const config = {
               dispatch('disableMastoSockets')
               dispatch('setOption', { name: 'useStreamingApi', value: false })
             })
+            break
           }
         }
       } else {
@@ -286,11 +292,6 @@ const config = {
           case 'theme':
             dispatch('setTheme', { themeName: value, recompile: true })
             break
-          case 'customTheme':
-          case 'customThemeSource': {
-            if (!value.ignore) dispatch('setTheme', { themeData: value })
-            break
-          }
           case 'themeDebug': {
             dispatch('setTheme', { recompile: true })
             break

src/modules/interface.js

@@ -255,10 +255,8 @@ const interfaceMod = {
       let promise = null
 
       if (themeName) {
-        // commit('setInstanceOption', { name: 'theme', value: themeName })
         promise = getPreset(themeName)
           .then(themeData => {
-            // commit('setInstanceOption', { name: 'themeData', value: themeData })
             return normalizeThemeData(themeData)
           })
       } else if (themeData) {