### 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 (index->type == Node::TYPE_CONSTANT) {
						uint32_t index_constant = static_cast<ConstantNode *>(index)->values[0].uint;
						if (index_constant >= (uint32_t)expr->get_array_size()) {
							_set_error(vformat(RTR("Index [%d] out of range [%d..%d]."), index_constant, 0, expr->get_array_size() - 1));
							return nullptr;
						}
					}
					member_type = expr->get_datatype();
					if (member_type == TYPE_STRUCT) {
						member_struct_name = expr->get_datatype_name();
					}
				} else {
					switch (expr->get_datatype()) {
						case TYPE_BVEC2:
						case TYPE_VEC2:
						case TYPE_IVEC2:
						case TYPE_UVEC2:
						case TYPE_MAT2:
							if (index->type == Node::TYPE_CONSTANT) {
								uint32_t index_constant = static_cast<ConstantNode *>(index)->values[0].uint;
								if (index_constant >= 2) {
									_set_error(vformat(RTR("Index [%d] out of range [%d..%d]."), index_constant, 0, 1));
									return nullptr;
								}
							}
							switch (expr->get_datatype()) {
								case TYPE_BVEC2:
									member_type = TYPE_BOOL;
									break;
								case TYPE_VEC2: