Fix the inconsistent behavior of PDO::PARAM_XXX

Hi internals, As shown in the following issue, the behavior of PDO::PARAM_XXXX is inconsistent and I would like to fix this. https://github.com/php/php-src/issues/12603 First, I tried fixed pdo_pgsql. https://github.com/php/php-src/pull/12605 Eventually I plan to make similar changes to all bundled pdos. What do you think about these? If there is a reason for the current implementation that should not be changed, it would be very helpful if you could tell me why. Also, if an RFC is required, it would be helpful if you could point it out as well. Personally, I don't think an RFC is necessary since this is some kind of bug fix. However, I believe the target should be the master branch as it changes the user experience somewhat. [*] I'm not thinking about LOB here, but once I leave them with their existing behavior, I change the behavior of other types. Because LOB have complex behavior, the scope becomes too large. After making this change, I will test again and post another issue if necessary. [*] I would like the type of PARAM_BOOL to be exactly bool, but this would also require changing the behavior of the emulator, and I would not be able to issue a PR for each driver, making the scope too large. For this as well, I will just align it to int(1) or string(1) 't', etc., and once these changes are completed, I will verify it and post an issue. [*] odbc etc. are not compatible with emulation in the first place. There are no plans to change this in this context. Regards. Saki