refactor: move instance to companion object

Author: xHeaven

src/main/kotlin/com/github/tempest/framework/views/completion/TemplateBracketBackspaceHandler.kt

@@ -14,7 +14,7 @@ class TemplateBracketBackspaceHandler : BackspaceHandlerDelegate() {
 
         if (c != '!' && c != '-') return false
 
-        INSTANCE.synchronizeBracketsAfterDeletion(file.project, editor)
+        TemplateBracketTypedHandler.INSTANCE.synchronizeBracketsAfterDeletion(file.project, editor)
 
         return false
     }

src/main/kotlin/com/github/tempest/framework/views/completion/TemplateBracketTypedHandler.kt

@@ -143,6 +143,10 @@ class TemplateBracketTypedHandler : TypedHandlerDelegate() {
             editor.document.replaceString(start, start + length, newText)
         }
     }
+
+    companion object {
+        val INSTANCE = TemplateBracketTypedHandler()
+    }
 }
 
 val BRACKET_PAIRS = listOf(
@@ -155,6 +159,4 @@ private val AUTO_COMPLETE_PAIRS = listOf(
     TemplateBracketTypedHandler.BracketPair("{{--", "--}}"),
     TemplateBracketTypedHandler.BracketPair("{{!!", "!!}}"),
     TemplateBracketTypedHandler.BracketPair("{{", "}}"),
-)
-
-val INSTANCE = TemplateBracketTypedHandler()
+)