### 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
if (b->parent_function->return_type != TYPE_VOID) {
					_set_error(vformat(RTR("Expected '%s' with an expression of type '%s'."), "return", (!return_struct_name.is_empty() ? return_struct_name : get_datatype_name(b->parent_function->return_type)) + array_size_string));
					return ERR_PARSE_ERROR;
				}
			} else {
				_set_tkpos(pos); 
#ifdef DEBUG_ENABLED
				if (b->parent_function->return_type == DataType::TYPE_BOOL) {
					keyword_completion_context = CF_BOOLEAN;
				}
#endif 
				Node *expr = _parse_and_reduce_expression(p_block, p_function_info);
				if (!expr) {
					return ERR_PARSE_ERROR;
				}
				if (b->parent_function->return_type != expr->get_datatype() || b->parent_function->return_array_size != expr->get_array_size() || return_struct_name != expr->get_datatype_name()) {
					_set_error(vformat(RTR("Expected return with an expression of type '%s'."), (!return_struct_name.is_empty() ? return_struct_name : get_datatype_name(b->parent_function->return_type)) + array_size_string));
					return ERR_PARSE_ERROR;
				}
				tk = _get_token();
				if (tk.type != TK_SEMICOLON) {
					_set_expected_after_error(";", "return");
					return ERR_PARSE_ERROR;
				}
#ifdef DEBUG_ENABLED
				if (b->parent_function->return_type == DataType::TYPE_BOOL) {
					keyword_completion_context = CF_BLOCK;
				}
#endif