increase distance threshold for points with no match via fwa-50k lookup

[smnorris]

We are perhaps just a little bit too conservative with the 100m cutoff for matching observations to streams where there is no lookup table confirmation of the match. A few valid seeming observations do not make it in to the output.

Perhaps go up to ~150 or 200m in cases where there is no lookup match?

[smnorris]

With a visual review of CH and CO spawning points it seems there are only 2-3 observations that do not make it in because of the 100m cutoff. But they tend to be high value spawning locations that are on unmapped side channels.