Report len as -1 instead of INT_MAX

Per docs it should be -1. And would be on 32-bit systems, but
not on 64-bit systems.

(cherry picked from commit 39111585a2f8e40e72bdc662eb8b2

Report len as -1 instead of INT_MAX

Per docs it should be -1. And would be on 32-bit systems, but
not on 64-bit systems.

(cherry picked from commit 39111585a2f8e40e72bdc662eb8b2e3c19e93615)

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Report len as -1 instead of INT_MAX

Per docs it should be -1. And would be on 32-bit systems, but
not on 64-bit systems.

Fix #79664: PDOStatement::getColumnMeta fails on empty result set

As its name suggests, `sqlite3_data_count` returns the number of
columns in the current row of the result set; we are in

Fix #79664: PDOStatement::getColumnMeta fails on empty result set

As its name suggests, `sqlite3_data_count` returns the number of
columns in the current row of the result set; we are interested in the
number of columns regardless of the current row, so we have to use
`sqlite3_column_count` instead.

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