### 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
calltip += char32_t(0xFFFF);
						}
					}
					if (shader->functions[i].function->arguments.size()) {
						calltip += " ";
					}
					calltip += ")";
					r_call_hint = calltip;
					return OK;
				}
			}
			int idx = 0;
			String calltip;
			bool low_end = RenderingServer::get_singleton()->is_low_end();
			if (stages && stages->has(block_function)) {
				for (const KeyValue<StringName, StageFunctionInfo> &E : (*stages)[block_function].stage_functions) {
					if (completion_function == E.key) {
						calltip += get_datatype_name(E.value.return_type);
						calltip += " ";
						calltip += E.key;
						calltip += "(";
						for (int i = 0; i < E.value.arguments.size(); i++) {
							if (i > 0) {
								calltip += ", ";
							} else {
								calltip += " ";
							}
							if (i == completion_argument) {
								calltip += char32_t(0xFFFF);
							}