Make compound ART index scan more robust for views

rewrite_index_exprs was overwritten (not OR'd) per column match, so if
the last index column sat at position i==j the flag reset to false,
silently falling back to a sequential scan. Accumulate the flag instead.

Add regression test for partially reordered view projections.

Author: sgrebnov

src/function/table/table_scan.cpp

@@ -583,7 +583,7 @@ bool TryScanIndex(ART &art, IndexEntry &entry, const ColumnList &column_list, Ta
 	for (idx_t i = 0; i < indexed_columns.size(); ++i) {
 		for (idx_t j = 0; j < input.column_ids.size(); ++j) {
 			if (indexed_columns[i] == input.column_ids[j]) {
-				rewrite_index_exprs = i != j;
+				rewrite_index_exprs = rewrite_index_exprs || i != j;
 				index_column_to_input_pos.at(i) = j;
 				break;
 			}

test/sql/index/art/issues/test_art_rewrite_index_exprs.test

@@ -0,0 +1,30 @@
+# name: test/sql/index/art/issues/test_art_rewrite_index_exprs.test
+# description: Test index scan through views where the last index column has i==j position
+# group: [issues]
+
+# Bug: rewrite_index_exprs was assigned (not OR'd) per match. If the last index
+# column sits at position i==j the flag resets to false, skipping column rebinding.
+
+statement ok
+CREATE TABLE t (a INTEGER, b INTEGER, c INTEGER);
+
+statement ok
+INSERT INTO t VALUES (1, 2, 3), (4, 5, 6), (7, 8, 9);
+
+statement ok
+CREATE INDEX idx ON t(a, b, c);
+
+# View swaps a and b but keeps c at position 2 (i==j for last index col)
+statement ok
+CREATE VIEW v AS SELECT b, a, c FROM t;
+
+# Must use Index Scan, not Sequential Scan
+query II
+explain analyze select * from v where a = 1 AND b = 2 AND c = 3;
+----
+analyzed_plan	<REGEX>:.*Index Scan.*
+
+query III
+select b, a, c from v where a = 1 AND b = 2 AND c = 3;
+----
+2	1	3