Text strings that contain = will not be parsed correctly

[DiscipleOfEris]

Actual Behavior:

When parsing the following (From Hazhalm Testing Grounds):

        RESERVATION_ENDS_MINUTES      = 8059, -- ---== Warning! ==---- Your reservation of this chamber will end in # [minute/minutes].
        RESERVATION_ENDS_SECONDS      = 8060, -- ---== Warning! ==---- Your reservation of this chamber will end in # [second/seconds].

It deletes the latter part (starting with =), leaving these entries as:

        RESERVATION_ENDS_MINUTES      = 8059, -- ---
        RESERVATION_ENDS_SECONDS      = 8060, -- ---

Running zone_texts again will just delete these lines, since they no longer match a zone text.

Expected Behavior

It should leave these entries untouched, because they are correct.

This is caused by https://github.com/LandSandBoat/UpdateExtractor/blob/main/zone_texts.py#LL238C34-L238C34

Specifically, original_line_parts = line.split("=") should be original_line_parts = line.split("=", 1) to avoid splitting on = that appear in the comment string.