Sanitize risky whitespace characters to recover from failed JSON.parse.
Sanitize risky whitespace characters to recover from failed JSON.parse.

Partial alternative to using json5, which we tried in commit
5124cb495c3ad13418fc08c45ac7720fcf8ecefb, which was recently reverted due
to performance concerns: 0e19c365a8ee115db5b45e69a9f9173dd89cb29a.

Should solve the specific problem reported in #10688.

Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor