chore：用户可以自定义选择复制的文字

lang/en-us/ai-chat/index.js

@@ -33,10 +33,6 @@ export const lang = {
 	noContentToCopy: 'No content to copy',
 	copySuccess: 'Copied',
 	copySelected: 'Copied selected content',
-	selectTextToCopy: 'Select text to copy',
-	selectedText: 'Selected',
-	copyAll: 'Copy all',
-	selectTextTip: 'Long press and drag the handles to choose any range',
 	copyFail: 'Copy failed',
 	copyFailWithReason: 'Copy failed: {reason}',
 	openingFile: 'Opening file...',