PI Requests are not trimmed

[hakasapl]

Reported by Kevin:

Somehow a user managed to insert a space into their PI request, causing it not to show up in the Portal. Maybe these values should be trim'ed before storing?

| id   | request_for               | uid                    | timestamp           |
+------+---------------------------+------------------------+---------------------+
| 2256 |  pi_...umass_edu          | ...umass_edu           | 2023-09-06 14:16:41 |
| 2323 | pi_...umass_edu           | ...umass_edu           | 2023-09-11 13:18:19 |

Removing the space caused it to appear in the portal again.

This is likely implicitly solved in 1.2 by switching to the new request form, but we should still verify.