Normalize is_iceberg Field for Consistency in Snowflake with QUOTED_IDENTIFIERS_IGNORE_CASE #11210

Job	Run time
build packages	14s
unit test / python 3.9	59s
code-quality	1m 2s
unit test / python 3.10	57s
unit test / python 3.11	52s
unit test / python 3.12	1m 3s
verify packages / python 3.9 / ubuntu-latest / whl	25s
verify packages / python 3.9 / ubuntu-latest / gz	23s
verify packages / python 3.10 / ubuntu-latest / whl	19s
verify packages / python 3.10 / ubuntu-latest / gz	30s
verify packages / python 3.11 / ubuntu-latest / whl	24s
verify packages / python 3.11 / ubuntu-latest / gz	24s
verify packages / python 3.12 / ubuntu-latest / whl	28s
verify packages / python 3.12 / ubuntu-latest / gz	37s
verify packages / python 3.9 / macos-14 / whl	25s
verify packages / python 3.9 / macos-14 / gz	21s
verify packages / python 3.10 / macos-14 / whl	35s
verify packages / python 3.10 / macos-14 / gz	21s
verify packages / python 3.11 / macos-14 / whl	20s
verify packages / python 3.11 / macos-14 / gz	20s
verify packages / python 3.12 / macos-14 / whl	25s
verify packages / python 3.12 / macos-14 / gz	27s
verify packages / python 3.9 / windows-latest / whl	56s
verify packages / python 3.9 / windows-latest / gz	1m 22s
verify packages / python 3.10 / windows-latest / whl	1m 10s
verify packages / python 3.10 / windows-latest / gz	1m 20s
verify packages / python 3.11 / windows-latest / whl	1m 49s
verify packages / python 3.11 / windows-latest / gz	1m 57s
verify packages / python 3.12 / windows-latest / whl	1m 58s
verify packages / python 3.12 / windows-latest / gz	2m 56s
	25m 19s

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