masterShapes does not sorted.

[kamatte-me]

In v1.5.4, master shapes were sorted and then shape.setNamespace() is executed.
https://github.com/svg-sprite/svg-sprite/blob/v1.5.4/lib/svg-sprite.js#L258-L265

However, in v2.0.0 and later, master shapes executes shape.setNamespace() without sorting.
https://github.com/svg-sprite/svg-sprite/blob/v2.0.2/lib/svg-sprite.js#L262-L279

This causes a difference in the namespace created by _indexNamespace() each time it is compiled. masterShapes should also be sorted.

[XhmikosR]

Patches are welcome to restore the previous behavior.

[XhmikosR]

@kamatte-me can you try this branch please? main...xmr/masterShapes

I can't figure out the exact commit this broke, so I'm not 100% sure this is the right fix, any help is welcome.