Selecting from double dimension behaves differently with double vs single quote

Hi everyone,

Along the same line of #6230 there's another potentially non-intuitive case:

`SELECT * FROM mytable WHERE dim_singleval_DOUBLE_rawencoding_rangeindex_column = 2518.9497060727695` (no quotes **AND** single quotes) errors out, while `SELECT * FROM mytable WHERE dim_singleval_DOUBLE_rawencoding_rangeindex_column = "2518.9497060727695"` (double quotes) works just fine.