### Godot version

4.0.beta14

### System information

windows 10, gles 3, nvidia graphics

### Issue description

SCREEN_TEXTURE  was dropped in beta 14. The suggested replacement is to use ```uniform sampler2D SCREEN_TEXTURE : hint_screen_texture, filter_linear_mipmaps;```, but filter_linear_mipmaps is not recognized as a valid shader type hint and a shader using it fails to compile.

### Steps to reproduce

Create a canvas item shader and use the filter_linear_mipmaps type hint with a sampler2D uniform.

### Minimal reproduction project

N/A
}
						mn->index_expression = index_expression;
					} else {
						_set_tkpos(prev_pos);
					}
				}
				expr = mn;
#ifdef DEBUG_ENABLED
				keyword_completion_context = prev_keyword_completion_context;
#endif
				
				
				
				/*} else if (tk.type==TK_BRACKET_OPEN) {
				
				//subindexing has priority over any operator
				
	*/
			} else if (tk.type == TK_BRACKET_OPEN) {
				Node *index = _parse_and_reduce_expression(p_block, p_function_info);
				if (!index) {
					return nullptr;
				}
				if (index->get_array_size() != 0 || (index->get_datatype() != TYPE_INT && index->get_datatype() != TYPE_UINT)) {
					_set_error(RTR("Only integer expressions are allowed for indexing."));
					return nullptr;
				}
				DataType member_type = TYPE_VOID;
				String member_struct_name;
				if (expr->get_array_size() > 0) {