### Godot version

v4.1.dev.custom_build.a7276f1ce

### System information

Win10, AMD 2600, GeForce GTX 1060, Vulkan API 1.3.205

### Issue description

I can't get correct color data from an array of source_color type.
The color data is saved as **Color** in the file:
`shader_parameter/palette = [Color (1, 0, 0, 1), Color (0, 1, 0, 1), Color (0, 0, 1, 1)]`
Shouldn't it be saved as PackedColorArray?


### Steps to reproduce

1.Declare an array of source_color type.
2.Set colors.

### Minimal reproduction project

[shadertest.zip](https://github.com/godotengine/godot/files/11246504/shadertest.zip)

default: {
				}
			}
			switch (j) {
				case RS::CANVAS_ITEM_TEXTURE_REPEAT_DISABLED: {
					sampler_state.repeat_u = RD::SAMPLER_REPEAT_MODE_CLAMP_TO_EDGE;
					sampler_state.repeat_v = RD::SAMPLER_REPEAT_MODE_CLAMP_TO_EDGE;
					sampler_state.repeat_w = RD::SAMPLER_REPEAT_MODE_CLAMP_TO_EDGE;
				} break;
				case RS::CANVAS_ITEM_TEXTURE_REPEAT_ENABLED: {
					sampler_state.repeat_u = RD::SAMPLER_REPEAT_MODE_REPEAT;
					sampler_state.repeat_v = RD::SAMPLER_REPEAT_MODE_REPEAT;
					sampler_state.repeat_w = RD::SAMPLER_REPEAT_MODE_REPEAT;
				} break;
				case RS::CANVAS_ITEM_TEXTURE_REPEAT_MIRROR: {
					sampler_state.repeat_u = RD::SAMPLER_REPEAT_MODE_MIRRORED_REPEAT;
					sampler_state.repeat_v = RD::SAMPLER_REPEAT_MODE_MIRRORED_REPEAT;
					sampler_state.repeat_w = RD::SAMPLER_REPEAT_MODE_MIRRORED_REPEAT;
				} break;
				default: {
				}
			}
			if (custom_rd_samplers[i][j].is_valid()) {
				RD::get_singleton()->free(custom_rd_samplers[i][j]);
			}
			custom_rd_samplers[i][j] = RD::get_singleton()->sampler_create(sampler_state);
		}
	}
}
int32_t MaterialStorage::_global_shader_uniform_allocate(uint32_t p_elements) {