fix(node): Module name resolution

[timfish]

The default basePath for createGetModuleFromFilename is dirname(process.argv[1]):

/** Creates a function that gets the module name from a filename */
export function createGetModuleFromFilename(
  basePath: string = dirname(process.argv[1]),

But the tests used a trailing slash for the base path:

sentry-javascript/packages/node/test/module.test.ts

Lines 3 to 4 in 84791bf

	const getModuleFromFilenameWindows = createGetModuleFromFilename('C:\\Users\\Tim\\', true);
	const getModuleFromFilenamePosix = createGetModuleFromFilename('/Users/Tim/');

Which means in some situations the module name can include a leading ..

The tests need to pass without a trailing slash on the basePath!