### 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)

{ TK_PRECISION_MID, "mediump", CF_BLOCK | CF_PRECISION_MODIFIER, {}, {} },
	{ TK_PRECISION_HIGH, "highp", CF_BLOCK | CF_PRECISION_MODIFIER, {}, {} },
	
	{ TK_UNIFORM, "uniform", CF_GLOBAL_SPACE | CF_UNIFORM_KEYWORD, {}, {} },
	{ TK_UNIFORM_GROUP, "group_uniforms", CF_GLOBAL_SPACE, {}, {} },
	{ TK_VARYING, "varying", CF_GLOBAL_SPACE, { "particles", "sky", "fog" }, {} },
	{ TK_CONST, "const", CF_BLOCK | CF_GLOBAL_SPACE | CF_CONST_KEYWORD, {}, {} },
	{ TK_STRUCT, "struct", CF_GLOBAL_SPACE, {}, {} },
	{ TK_SHADER_TYPE, "shader_type", CF_SHADER_TYPE, {}, {} },
	{ TK_RENDER_MODE, "render_mode", CF_GLOBAL_SPACE, {}, {} },
	
	{ TK_INSTANCE, "instance", CF_GLOBAL_SPACE | CF_UNIFORM_QUALIFIER, {}, {} },
	{ TK_GLOBAL, "global", CF_GLOBAL_SPACE | CF_UNIFORM_QUALIFIER, {}, {} },
	
	{ TK_CF_IF, "if", CF_BLOCK, {}, {} },
	{ TK_CF_ELSE, "else", CF_BLOCK, {}, {} },
	{ TK_CF_FOR, "for", CF_BLOCK, {}, {} },
	{ TK_CF_WHILE, "while", CF_BLOCK, {}, {} },
	{ TK_CF_DO, "do", CF_BLOCK, {}, {} },
	{ TK_CF_SWITCH, "switch", CF_BLOCK, {}, {} },
	{ TK_CF_CASE, "case", CF_BLOCK, {}, {} },
	{ TK_CF_DEFAULT, "default", CF_BLOCK, {}, {} },
	{ TK_CF_BREAK, "break", CF_BLOCK, {}, {} },
	{ TK_CF_CONTINUE, "continue", CF_BLOCK, {}, {} },
	{ TK_CF_RETURN, "return", CF_BLOCK, {}, {} },
	{ TK_CF_DISCARD, "discard", CF_BLOCK, { "particles", "sky", "fog" }, { "fragment" } },
	
	{ TK_ARG_IN, "in", CF_FUNC_DECL_PARAM_SPEC, {}, {} },
	{ TK_ARG_OUT, "out", CF_FUNC_DECL_PARAM_SPEC, {}, {} },
	{ TK_ARG_INOUT, "inout", CF_FUNC_DECL_PARAM_SPEC, {}, {} },