bug(bigquery): time literal does not include microseconds in compiled SQL

[tswast]

What happened?

import datetime

import ibis

ibis.__version__
# '9.1.0'

literal = ibis.literal(datetime.time(12, 34, 56, 789101))
literal
# datetime.time(12, 34, 56, 789101)

type(literal)
# ibis.expr.types.temporal.TimeScalar

ibis.to_sql(literal, dialect="bigquery")
# SELECT time(12, 34, 56) AS `datetime_time_12_34_56_789101`

ibis.to_sql(literal, dialect="duckdb")
# SELECT MAKE_TIME(12, 34, 56.789101) AS "datetime.time(12, 34, 56, 789101)"

What version of ibis are you using?

9.1.0

What backend(s) are you using, if any?

BigQuery

Relevant log output

N/A

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