fix(parser): allow unquoted STATUS keyword in DESCRIBE statements

Add STATUS to the simple_ident grammar rule to fix syntax error when
running DESCRIBE dolt.status without quoting the table name.

The simple_ident rule only allowed IDENT tokens and PUBLIC keyword.
Since STATUS is defined as an unreserved keyword in the grammar, it
was rejected in DESCRIBE statements unless quoted. This follows the
same pattern used when PUBLIC was added in PR #828.

Enable the previously skipped test that validates this fix.

Refs: #1057

Author: codeaucafe

postgres/parser/parser/sql.y

@@ -14549,6 +14549,7 @@ complex_db_object_name_no_keywords:
 simple_ident:
   IDENT
 | PUBLIC // PUBLIC is a keyword, but its use as the default schema makes it nice to include here
+| STATUS // STATUS is a keyword, but needed for dolt.status system table (issue #1057)
 
 // DB object name component -- this cannot not include any reserved
 // keyword because of ambiguity after FROM, but we've been too lax

testing/go/dolt_tables_test.go

@@ -1910,7 +1910,6 @@ func TestUserSpaceDoltTables(t *testing.T) {
 					},
 				},
 				{
-					Skip:  true, // TODO: ERROR: at or near "status": syntax error
 					Query: `DESCRIBE dolt.status`,
 					Expected: []sql.Row{
 						{"table_name", "text", "NO", "PRI", nil, ""},