Fix extension soft lock when inspecting Dictionary variables with Variant key types (#854)

Co-authored-by: Pawel Miniszewski <pawel.miniszewski@gmail.com>

Author: pminiszewski

src/debugger/godot4/variables/variant_decoder.ts

@@ -210,6 +210,9 @@ export class VariantDecoder {
 
 private decode_ContainerTypeFlag(model: BufferModel, type: GDScriptTypes, bitOffset: number) {
 const shiftedType = (type >> bitOffset) & 0b11;
+if (shiftedType === ContainerTypeFlags.NONE) {
+return 0;
+}
 if (shiftedType === ContainerTypeFlags.BUILTIN) {
 return this.decode_UInt32(model);
 } else {

src/debugger/godot4/variables/variants.ts

@@ -58,6 +58,7 @@ export const ENCODE_FLAG_TYPED_ARRAY_MASK = 0b11 << 16;
 export const ENCODE_FLAG_TYPED_DICT_MASK = 0b1111 << 16;
 
 export enum ContainerTypeFlags {
+NONE = 0,
 BUILTIN = 1,
 CLASS_NAME = 2,
 SCRIPT = 3,