### 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
Vector<ConstantNode::Value> values;
		for (int i = 1; i < op->arguments.size(); i++) {
			op->arguments.write[i] = _reduce_expression(p_block, op->arguments[i]);
			if (op->arguments[i]->type == Node::TYPE_CONSTANT) {
				ConstantNode *cn = static_cast<ConstantNode *>(op->arguments[i]);
				if (get_scalar_type(cn->datatype) == base) {
					for (int j = 0; j < cn->values.size(); j++) {
						values.push_back(cn->values[j]);
					}
				} else if (get_scalar_type(cn->datatype) == cn->datatype) {
					ConstantNode::Value v;
					if (!convert_constant(cn, base, &v)) {
						return p_node;
					}
					values.push_back(v);
				} else {
					return p_node;
				}
			} else {
				return p_node;
			}
		}
		if (values.size() == 1) {
			if (type >= TYPE_MAT2 && type <= TYPE_MAT4) {
				ConstantNode::Value value = values[0];
				ConstantNode::Value zero;
				zero.real = 0.0f;
				int size = 2 + (type - TYPE_MAT2);
				values.clear();
				for (int i = 0; i < size; i++) {