refactor(frontend): os.select, MkSelectのitem指定をオブジェクトによる定義に統一し、型を狭める (#16475)

* refactor(frontend): MkSelectのitem指定をオブジェクトによる定義に統一

* fix

* spdx

* fix

* fix os.select

* fix lint

* add comment

* fix

* fix: os.select対応漏れを修正

* fix

* fix

* fix: MkSelectのmodelに対する型チェックを厳格化

* fix

* fix

* fix

* Update packages/frontend/src/components/MkEmbedCodeGenDialog.vue

Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

* fix

* fix types

* fix

* fix

* Update packages/frontend/src/pages/admin/roles.editor.vue

Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

* fix: MkSelectに直接配列を指定している場合に正常に型が解決されるように

---------

Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

packages/frontend/src/preferences/manager.ts

@@ -447,16 +447,16 @@ export class PreferencesManager {
 				title: i18n.ts.preferenceSyncConflictTitle,
 				text: i18n.ts.preferenceSyncConflictText,
 				items: [...(mergedValue !== undefined ? [{
-					text: i18n.ts.preferenceSyncConflictChoiceMerge,
-					value: 'merge',
+					label: i18n.ts.preferenceSyncConflictChoiceMerge,
+					value: 'merge' as const,
 				}] : []), {
-					text: i18n.ts.preferenceSyncConflictChoiceServer,
-					value: 'remote',
+					label: i18n.ts.preferenceSyncConflictChoiceServer,
+					value: 'remote' as const,
 				}, {
-					text: i18n.ts.preferenceSyncConflictChoiceDevice,
-					value: 'local',
+					label: i18n.ts.preferenceSyncConflictChoiceDevice,
+					value: 'local' as const,
 				}, {
-					text: i18n.ts.preferenceSyncConflictChoiceCancel,
+					label: i18n.ts.preferenceSyncConflictChoiceCancel,
 					value: null,
 				}],
 				default: mergedValue !== undefined ? 'merge' : 'remote',