fix(snowflake): use get instead of get_path; get_path does not support columns with spaces

[cpcloud]

Closes #10835.

[cpcloud]

I'm looking into why we were using get_path in the first place.

[cpcloud]

GET_PATH does support quoted names, but for this particular case, GET generates less code and is easier to read.

[cpcloud]

Snowflake is passing:

cloud in 🌐 falcon in …/ibis on  fix-snowflake-temp-table-creation is 📦 v10.0.0 via 🐍 v3.12.8 via ❄️  impure (ibis-3.12-env)
❯ pytest -m snowflake -n 8 --dist loadgroup -q
bringing up nodes...
.............................................................xxxxxxx....x....x.............x................................x..........xxx............x.......................x..............................x............................x....x..........................................................s............x.........x.xx...x.....x.x.x...xx..............x......xx......x.xx........x.xx [ 19%]
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..........x..................................x.....x......x.............x..xx.x.....x............x......x....x.........x.........x..............x.......x.................x........................xx...............x...x.x..x.x........xx..........x..x....x.x....xx....x..x.....x..x.........x...x...x..x.x............xx..xx........x.x........x.......x..............x..xx.................x.x... [ 57%]
........x.................................................x..................x....................................x.........................x...................x....x............................................x......x.xxx..x...........xxx.xx..xx......xx.xx...x.xxxx.xxx..xx..xxxx..x..x..xx.....xx.x.x.xxx.x...x...xx.xxxxx.x..x.....xxx....xxxxxxxx.x.x....x..x..x..x...x...x...x............ [ 76%]
x........x......x..x...............xx........................x..........x..x.............x.............x........x.x...........x...................................................x...............x......x....xx.....................x...........x..x..x...........................x.s....s..........s............................................................................................... [ 95%]
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1817 passed, 10 skipped, 220 xfailed in 219.94s (0:03:39)

[cpcloud]

Looks like I introduced get_path usage in a555774, as part of the parquet loading cleanup in the Snowflake backend.

That said, I'm not entirely sure why I used that instead of get.

[cpcloud]

Beefed up the test a bit to use hypothesis, in order to find any cases we're not handling.