[BUG] cast timezone-awareness check positive for date/time-unrelated types

[gerashegalov]

Describe the bug
Cast falls back on CPU even if data types are not related to time

 !Expression <Cast> cast(a#2 as double) cannot run on GPU because Only UTC zone id is supported. Actual default zone id: GMT-01:00; Only UTC zone id is supported. Actual session local zone id: GMT-01:00

Steps/Code to reproduce bug

Start Spark in a non-UTC timezone

TZ=UTC+1 ~/dist/spark-3.3.0-bin-hadoop3/bin/pyspark \
  --jars ~/gits/NVIDIA/spark-rapids/dist/target/rapids-4-spark_2.12-22.08.0-SNAPSHOT-cuda11.jar \
  --conf spark.plugins=com.nvidia.spark.SQLPlugin 

Execute:

>>> spark.createDataFrame([(1,)], 'a int').selectExpr('CAST(a AS DOUBLE)').collect() 
22/07/28 16:12:30 WARN GpuOverrides: 
!Exec <ProjectExec> cannot run on GPU because not all expressions can be replaced
  @Expression <Alias> cast(a#2 as double) AS a#4 could run on GPU
    !Expression <Cast> cast(a#2 as double) cannot run on GPU because Only UTC zone id is supported. Actual default zone id: GMT-01:00; Only UTC zone id is supported. Actual session local zone id: GMT-01:00
      @Expression <AttributeReference> a#2 could run on GPU
  ! <RDDScanExec> cannot run on GPU because GPU does not currently support the operator class org.apache.spark.sql.execution.RDDScanExec
    @Expression <AttributeReference> a#2 could run on GPU

[Row(a=1.0)]

Expected behavior
should be able to run cast such as int to double on GPU regardless of the timezone

Environment details (please complete the following information)

• Environment location: Any
• Spark configuration settings related to the issue: N/A

Additional context
#6103