Fix SQLite Decimal and Date32/64 insertion/retrieval (#517)

* Revert "Properly handle decoding decimals from SQLite using the decimal extension (#504)"

This reverts commit df8eeb1.

* Remove decimal test - its invalid

* Revert "Add roundtrip test and fix Decimal support"

This reverts commit b9e3c14.

* Use spiceai fork of sea-query

* fix(sqlite): store Date32/Date64 as ISO-8601 strings in insert_batch_prepared

The insert_batch_prepared function was storing Date32/Date64 values as Unix
timestamps (e.g., 751248000), while the non-batch insert_batch function
(via InsertBuilder) correctly stores them as ISO-8601 date strings
(e.g., '1993-10-22').

When reading data back, the SQLite table provider expects date columns to
contain ISO-8601 formatted strings for proper parsing/casting back to
Arrow Date32 types. The Unix timestamp values failed to parse, resulting
in NULL/empty date values.

This change updates insert_batch_prepared to convert Date32/Date64 values
to ISO-8601 strings using time::OffsetDateTime, matching the behavior of
InsertBuilder::construct_insert_stmt.

* Remove unneeded test

Author: phillipleblanc

Cargo.lock

@@ -82,14 +82,14 @@ fundu = "2.0.1"
 geo-types = "0.7.13"
 sha2 = "0.10"
 hickory-resolver = "0.25.2"
-sea-query = { version = "0.32", features = [
-    "backend-sqlite",
-    "backend-postgres",
-    "postgres-array",
-    "with-rust_decimal",
-    "with-bigdecimal",
-    "with-time",
-    "with-chrono",
+sea-query = { git = "https://github.com/spiceai/sea-query.git", rev = "213b6b876068f58159ebdd5852604a021afaebf9", features = [
+  "backend-sqlite",
+  "backend-postgres",
+  "postgres-array",
+  "with-rust_decimal",
+  "with-bigdecimal",
+  "with-time",
+  "with-chrono",
 ] }
 
 [patch.crates-io]