Remove Source Map Generation

[threeal]

This proposal recommends removing the generation of source maps when compiling TypeScript source files to JavaScript. The rationale behind this suggestion is that source maps typically map to source files using relative paths (e.g., ../src/index.mts). Including source maps in the distributed package without the TypeScript source files appears redundant. Therefore, the suggested change is to eliminate the source map generation since the JavaScript output of TypeScript is not substantially different.