### 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)

{ "modf", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, { "x", "i" }, TAG_GLOBAL, false },
	
	{ "min", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "min", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "min", TYPE_VEC2, { TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "min", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "min", TYPE_VEC3, { TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "min", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "min", TYPE_VEC4, { TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "min", TYPE_INT, { TYPE_INT, TYPE_INT, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "min", TYPE_IVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "min", TYPE_IVEC2, { TYPE_IVEC2, TYPE_INT, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "min", TYPE_IVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "min", TYPE_IVEC3, { TYPE_IVEC3, TYPE_INT, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "min", TYPE_IVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "min", TYPE_IVEC4, { TYPE_IVEC4, TYPE_INT, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "min", TYPE_UINT, { TYPE_UINT, TYPE_UINT, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "min", TYPE_UVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "min", TYPE_UVEC2, { TYPE_UVEC2, TYPE_UINT, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "min", TYPE_UVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "min", TYPE_UVEC3, { TYPE_UVEC3, TYPE_UINT, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "min", TYPE_UVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "min", TYPE_UVEC4, { TYPE_UVEC4, TYPE_UINT, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	
	{ "max", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "max", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "max", TYPE_VEC2, { TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "max", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "max", TYPE_VEC3, { TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },
	{ "max", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, { "a", "b" }, TAG_GLOBAL, false },