### 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
}
									} else { 
										VariableNode *vn = static_cast<VariableNode *>(p_func->arguments[arg_idx + 1]);
										if (vn->is_const) {
											fail = true;
										} else {
											StringName varname = vn->name;
											if (shader->uniforms.has(varname)) {
												fail = true;
											} else {
												if (shader->varyings.has(varname)) {
													_set_error(vformat(RTR("Varyings cannot be passed for the '%s' parameter."), "out"));
													return false;
												}
												if (p_function_info.built_ins.has(varname)) {
													BuiltInInfo info = p_function_info.built_ins[varname];
													if (info.constant) {
														fail = true;
													}
												}
											}
										}
									}
									if (fail) {
										_set_error(vformat(RTR("A constant value cannot be passed for the '%s' parameter."), "out"));
										return false;
									}
									StringName var_name;
									if (p_func->arguments[arg_idx + 1]->type == Node::TYPE_ARRAY) {
										var_name = static_cast<const ArrayNode *>(p_func->arguments[arg_idx + 1])->name;