Updates stored site URLs when a Playground moves to another host or scope.
Serialized settings must be decoded and encoded again because URL lengths
can change. Keep scope-only links working as they did during ZIP imports.
Serialized objects and references are preserved unchanged.
Serialized-looking values that fail decoding or round-trip checks are also preserved.
Matching rows are read into memory, as during ZIP imports.
Updates stored site URLs when a Playground moves to another host or scope. Serialized settings must be decoded and encoded again because URL lengths can change. Keep scope-only links working as they did during ZIP imports. Serialized objects and references are preserved unchanged. Serialized-looking values that fail decoding or round-trip checks are also preserved. Matching rows are read into memory, as during ZIP imports.