feat: toolkit parameters in three columns + one access row (v3.6.50)

The SIM/UICC Toolkit parameters grid is grid-cols-3 now: the 12 narrow
fields (priority, timers, text length, menus, first pos/id, last pos/id,
channels, MSL, TAR, access domain) fit in four clean rows, Max services
keeps its own row (it was a lone half-row in the 2-column layout) and the
file-access group is one col-span-3 row: File system access (full) ·
ADF.USIM access (full) · ADF AID (hex) + From card.

The ADF AID cell is its own rc-tk-adfaid-row; the whole group is wrapped
in rc-tk-access-row, which updateRcTkMode hides in SIM/CA mode (hiding
only the old checkbox rows would leave the AID field behind).

grid-cols-3/col-span-3 were already compiled (no Tailwind rebuild); the
html test pins the 3-column grid and the spanning access row with its
three cells, the JS guard pins the CA/EA visibility.

sw cache simple-v323; tests: 540 Python / 689 Node.

pysim_simple_server/server.py

@@ -31,7 +31,7 @@ from osmocom.tlv import BER_TLV_IE
 from osmocom.utils import rpad
 
 
-VERSION = '3.6.49'
+VERSION = '3.6.50'
 
 MAX_ENVELOPE_SEGMENTS = 5  # max SMS segments for outgoing C-APDU in ENVELOPE