Legacy regression TextSymbolizer has no group

[ger-benjamin]

See method processLabelClass.

geostyler-lyrx-parser/src/toGeostyler.ts

Line 307 in a88b888

// @ts-ignore FIXME see issue #67

We assign group but it doesn't exist in Geostyler and will not be used.

[ger-benjamin]

Legacy logic coming from GeoCat/bridge-style@728593d