### 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
continue;
				}
				if (!keyword_list[i].functions.is_empty() && !keyword_list[i].functions.has(current_function)) {
					continue;
				}
				ScriptLanguage::CodeCompletionOption option(keyword_list[i].text, ScriptLanguage::CODE_COMPLETION_KIND_PLAIN_TEXT);
				r_options->push_back(option);
			}
		}
	}
#endif 
	switch (completion_type) {
		case COMPLETION_NONE: {
			
			return OK;
		} break;
		case COMPLETION_SHADER_TYPE: {
			for (const String &shader_type : p_info.shader_types) {
				ScriptLanguage::CodeCompletionOption option(shader_type, ScriptLanguage::CODE_COMPLETION_KIND_PLAIN_TEXT);
				r_options->push_back(option);
			}
			return OK;
		} break;
		case COMPLETION_RENDER_MODE: {
			if (is_shader_inc) {
				for (int i = 0; i < RenderingServer::SHADER_MAX; i++) {
					const Vector<ModeInfo> modes = ShaderTypes::get_singleton()->get_modes(RenderingServer::ShaderMode(i));
					for (int j = 0; j < modes.size(); j++) {
						const ModeInfo &info = modes[j];
						if (!info.options.is_empty()) {