### 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)

function = nullptr;
			}
			
		} break;
		case SL::Node::NODE_TYPE_STRUCT: {
		} break;
		case SL::Node::NODE_TYPE_FUNCTION: {
		} break;
		case SL::Node::NODE_TYPE_BLOCK: {
			SL::BlockNode *bnode = (SL::BlockNode *)p_node;
			
			if (!bnode->single_statement) {
				code += _mktab(p_level - 1) + "{\n";
			}
			for (int i = 0; i < bnode->statements.size(); i++) {
				String scode = _dump_node_code(bnode->statements[i], p_level, r_gen_code, p_actions, p_default_actions, p_assigning);
				if (bnode->statements[i]->type == SL::Node::NODE_TYPE_CONTROL_FLOW || bnode->single_statement) {
					code += scode; 
					if (bnode->use_comma_between_statements && i + 1 < bnode->statements.size()) {
						code += ",";
					}
				} else {
					code += _mktab(p_level) + scode + ";\n";
				}
			}
			if (!bnode->single_statement) {
				code += _mktab(p_level - 1) + "}\n";
			}
		} break;
		case SL::Node::NODE_TYPE_VARIABLE_DECLARATION: {