### Tested versions

Reproducible in: 4.2.1 - RC1
Not reproducible in: 4.2

### System information

Windows 11 - Godot 4.2 - Compatibility

### Issue description

When using a GPUParticles2D in Godot 4.2.1-RC1 no particles are rendered on screen

### Steps to reproduce

Create a project using 4.2.1-RC1
Set the rending mode to Compatibility.
Create a GPUParticles2D system.
No particles are rendered.

### Minimal reproduction project (MRP)

[ParticlesTest.zip](https://github.com/godotengine/godot/files/13621559/ParticlesTest.zip)
uint16_t *bone16w = (uint16_t *)&uptr[base_offset + i * stride];
				bone16w[0] = bone_ptr[i * 4 + 0];
				bone16w[1] = bone_ptr[i * 4 + 1];
				bone16w[2] = bone_ptr[i * 4 + 2];
				bone16w[3] = bone_ptr[i * 4 + 3];
			}
			base_offset += 2;
		} else {
			glDisableVertexAttribArray(RS::ARRAY_BONES);
		}
		if ((uint32_t)p_weights.size() == vertex_count * 4) {
			glEnableVertexAttribArray(RS::ARRAY_WEIGHTS);
			glVertexAttribPointer(RS::ARRAY_WEIGHTS, 4, GL_FLOAT, GL_FALSE, stride * sizeof(float), CAST_INT_TO_UCHAR_PTR(base_offset * sizeof(float)));
			const float *weight_ptr = p_weights.ptr();
			for (uint32_t i = 0; i < vertex_count; i++) {
				uint16_t *weight16w = (uint16_t *)&uptr[base_offset + i * stride];
				weight16w[0] = CLAMP(weight_ptr[i * 4 + 0] * 65535, 0, 65535);
				weight16w[1] = CLAMP(weight_ptr[i * 4 + 1] * 65535, 0, 65535);
				weight16w[2] = CLAMP(weight_ptr[i * 4 + 2] * 65535, 0, 65535);
				weight16w[3] = CLAMP(weight_ptr[i * 4 + 3] * 65535, 0, 65535);
			}
			base_offset += 2;
		} else {
			glDisableVertexAttribArray(RS::ARRAY_WEIGHTS);
		}
		ERR_FAIL_COND_V(base_offset != stride, 0);
		GLES3::Utilities::get_singleton()->buffer_allocate_data(GL_ARRAY_BUFFER, pb.vertex_buffer, vertex_count * stride * sizeof(float), polygon_buffer.ptr(), GL_STATIC_DRAW, "Polygon 2D vertex buffer");
	}
	if (p_indices.size()) {