### 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 (r_data_type) {
				*r_data_type = p_block->variables[p_identifier].type;
			}
			if (r_is_const) {
				*r_is_const = p_block->variables[p_identifier].is_const;
			}
			if (r_array_size) {
				*r_array_size = p_block->variables[p_identifier].array_size;
			}
			if (r_struct_name) {
				*r_struct_name = p_block->variables[p_identifier].struct_name;
			}
			if (r_constant_value) {
				*r_constant_value = p_block->variables[p_identifier].value;
			}
			if (r_type) {
				*r_type = IDENTIFIER_LOCAL_VAR;
			}
			return true;
		}
		if (p_block->parent_function) {
			function = p_block->parent_function;
			break;
		} else {
			if (p_allow_reassign) {
				break;
			}
			ERR_FAIL_COND_V(!p_block->parent_block, false);
			p_block = p_block->parent_block;
		}