TryGetTidFromTargetId() fails to parse thread ID from target-id if format is like Thread 123.123 #1448

MS_MIDebug: 1: (14914) ->1015^done,threads=[{id="1",target-id="Thread 15307.15307",frame={level="0",addr="0xb6f24aa0",func="_start",args=[],from="/cygdrive/e/WORK/CDK/CYGWIN32/ARM_LINUX_GNU_CROSSTOOLS/V5.3-1/x-tools/arm-unknown-linux-gnueabi/arm-unknown-linux-gnueabi/sysroot/lib/ld-linux.so.3",arch="armv5tej"},state="stopped"}]