fix: fallback to Spark scan if encryption is enabled (native_datafusion/native_iceberg_compat)

[parthchandra]

Which issue does this PR close?

Part of #1542
Closes #.

Rationale for this change

Encrypted files are not currently supported and cause failure

What changes are included in this PR?

If encryption is enabled, fallback to Spark.

How are these changes tested?

Existing Spark SQL ParquetEncryptionSuite

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 6 lines in your changes missing coverage. Please review.

Project coverage is 59.55%. Comparing base (f09f8af) to head (ad38777).
Report is 222 commits behind head on main.

Files with missing lines	Patch %	Lines
...n/scala/org/apache/comet/rules/CometScanRule.scala	0.00%	4 Missing and 2 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #1785      +/-   ##
============================================
+ Coverage     56.12%   59.55%   +3.42%     
- Complexity      976     1144     +168     
============================================
  Files           119      129      +10     
  Lines         11743    12596     +853     
  Branches       2251     2360     +109     
============================================
+ Hits           6591     7501     +910     
+ Misses         4012     3899     -113     
- Partials       1140     1196      +56     

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[parthchandra]

Also added a small fix for field id types in native_iceberg_compat

[parthchandra]

reverted change for field_ids

[parthchandra]

@andygrove @mbutrovich

[andygrove]

Thanks @parthchandra