`ib`: rejects their own fractional size tick..

Frickin ib, they give you the `0.001` (or wtv) in the
`ContractDetails.minSize: float` but won't accept fractional sizes
through the API.. Either way, it's probably not sane to be supporting
fractional order sizes for legacy instruments by default especially
since it in theory affects a lot of the clearing outcomes by having ib
do wtv magical junk behind the scenes to make it work..

piker/brokers/ib/feed.py

@@ -619,7 +619,7 @@ async def _setup_quote_stream(
 async def open_aio_quote_stream(
 
     symbol: str,
-    contract: Optional[Contract] = None,
+    contract: Contract | None = None,
 
 ) -> trio.abc.ReceiveStream:
 
@@ -741,9 +741,9 @@ async def stream_quotes(
 
         try:
             (
-                con,
-                first_ticker,
-                details,
+                con,  # Contract
+                first_ticker,  # Ticker
+                details,  # ContractDetails
             ) = await proxy.get_sym_details(symbol=sym)
         except ConnectionError:
             log.exception(f'Proxy is ded {proxy._aio_ns}')
@@ -759,6 +759,7 @@ async def stream_quotes(
 
             '''
             # pass back some symbol info like min_tick, trading_hours, etc.
+            con: Contract = details.contract
             syminfo = asdict(details)
             syminfo.update(syminfo['contract'])
 
@@ -785,6 +786,11 @@ async def stream_quotes(
             price_tick: Decimal = Decimal(str(syminfo['minTick']))
             size_tick: Decimal = Decimal(str(syminfo['minSize']).rstrip('0'))
 
+            # XXX: GRRRR they don't support fractional share sizes for
+            # stocks from the API?!
+            if con.secType == 'STK':
+                size_tick = Decimal('1')
+
             syminfo['price_tick_size'] = price_tick
             # NOTE: as you'd expect for "legacy" assets, the "volume
             # precision" is normally discreet.