`Options.fs` is bypassed in some places and `node:fs` APIs are invoked directly, leading to incorrect behavior

[DavidAnson]

As a result, callers passing a custom fs implementation (to fast-glob) get incorrect behavior due to the wrong file system APIs being invoked by globby.

Examples:

• globby/index.js

  Line 2 in b0d7330

  import fs from 'node:fs';

• globby/index.js

  Line 64 in b0d7330

  stat = fs.statSync(cwd);

• globby/ignore.js

  Lines 2 to 3 in b0d7330

  	import fs from 'node:fs';
  	import fsPromises from 'node:fs/promises';

• globby/ignore.js

  Line 82 in b0d7330

  content: await fsPromises.readFile(filePath, 'utf8'),

• globby/ignore.js

  Line 102 in b0d7330

  content: fs.readFileSync(filePath, 'utf8'),

[DavidAnson]

Related (subsets): #189 #236