### 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
o.op = OP_ASSIGN_MUL;
					break;
				case TK_OP_ASSIGN_DIV:
					o.op = OP_ASSIGN_DIV;
					break;
				case TK_OP_ASSIGN_MOD:
					o.op = OP_ASSIGN_MOD;
					break;
				case TK_OP_ASSIGN_SHIFT_LEFT:
					o.op = OP_ASSIGN_SHIFT_LEFT;
					break;
				case TK_OP_ASSIGN_SHIFT_RIGHT:
					o.op = OP_ASSIGN_SHIFT_RIGHT;
					break;
				case TK_OP_ASSIGN_BIT_AND:
					o.op = OP_ASSIGN_BIT_AND;
					break;
				case TK_OP_ASSIGN_BIT_OR:
					o.op = OP_ASSIGN_BIT_OR;
					break;
				case TK_OP_ASSIGN_BIT_XOR:
					o.op = OP_ASSIGN_BIT_XOR;
					break;
				case TK_OP_BIT_AND:
					o.op = OP_BIT_AND;
					break;
				case TK_OP_BIT_OR:
					o.op = OP_BIT_OR;
					break;
				case TK_OP_BIT_XOR: