### Godot version

v4.1.rc2.official [46424488e]

### System information

Godot v4.1.rc2 - Windows 10.0.22621 - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 2060 (NVIDIA; 31.0.15.2802) - Intel(R) Core(TM) i5-10400F CPU @ 2.90GHz (12 Threads)

### Issue description

The native shader generated from (for example) a canvas_item shader has some modified floating point litterals. For example, in the following function, the "43758.5453" becomes "43758.5".

float rand(vec2 x) {
    return fract(cos(mod(dot(x, vec2(13.9898, 8.141)), 3.14)) * 43758.5453);
}

It is probably not a problem in most cases, but Material Maker generates both Godot shaders to preview results and compute shaders to render them to textures (and the end results are not the same). I can workaround the problem (by making sure float literals are not "too precise") for shaders that are provides with Material Maker, but it will remain for user-defined shaders.

### Steps to reproduce

Open the attached project
Open shader_example.tres material
Open the shader in the shader editor
Inspect native code for the material and select the fragment tab

![image](https://github.com/godotengine/godot/assets/6957908/66a8b99a-8c77-43c1-aa67-d768579d0387)


### Minimal reproduction project

[floating_point_literal_bug.zip](https://github.com/godotengine/godot/files/11924814/floating_point_literal_bug.zip)

case SL::OP_ASSIGN_ADD:
				case SL::OP_ASSIGN_SUB:
				case SL::OP_ASSIGN_MUL:
				case SL::OP_ASSIGN_DIV:
				case SL::OP_ASSIGN_SHIFT_LEFT:
				case SL::OP_ASSIGN_SHIFT_RIGHT:
				case SL::OP_ASSIGN_MOD:
				case SL::OP_ASSIGN_BIT_AND:
				case SL::OP_ASSIGN_BIT_OR:
				case SL::OP_ASSIGN_BIT_XOR:
					code = _dump_node_code(onode->arguments[0], p_level, r_gen_code, p_actions, p_default_actions, true) + _opstr(onode->op) + _dump_node_code(onode->arguments[1], p_level, r_gen_code, p_actions, p_default_actions, p_assigning);
					break;
				case SL::OP_BIT_INVERT:
				case SL::OP_NEGATE:
				case SL::OP_NOT:
				case SL::OP_DECREMENT:
				case SL::OP_INCREMENT:
					code = _opstr(onode->op) + _dump_node_code(onode->arguments[0], p_level, r_gen_code, p_actions, p_default_actions, p_assigning);
					break;
				case SL::OP_POST_DECREMENT:
				case SL::OP_POST_INCREMENT:
					code = _dump_node_code(onode->arguments[0], p_level, r_gen_code, p_actions, p_default_actions, p_assigning) + _opstr(onode->op);
					break;
				case SL::OP_CALL:
				case SL::OP_STRUCT:
				case SL::OP_CONSTRUCT: {
					ERR_FAIL_COND_V(onode->arguments[0]->type != SL::Node::NODE_TYPE_VARIABLE, String());
					const SL::VariableNode *vnode = static_cast<const SL::VariableNode *>(onode->arguments[0]);
					const SL::FunctionNode *func = nullptr;
					const bool is_internal_func = internal_functions.has(vnode->name);