BUG #18356: Casting values from jsonb_each_text does not respect WHERE filter with sub select

The following bug has been logged on the website:

Bug reference: 18356
Logged by: Ed Herrmann
Email address: ewherrmann(at)gmail(dot)com
PostgreSQL version: 16.0
Operating system: Linux, MacOS
Description:

- Prior to v16, this statement would work for casting values of a k/v jsonb
pair to an integer:
SELECT id, mytdata.key, mytdata.value::integer
FROM my_table as myt,
jsonb_each_text(myt.data) as mytdata
WHERE mytdata.key IN ( SELECT key from week_key_table
)

- Where week_key_table stores keys such as "week01", "week02", and
"week03".
- And where the jsonb has some keys with alphanumeric values and some keys
with numeric values, such as: { "key_figure": "Volume", "week01": "0",
"week02": "0", "week03": "0"}

However as of v16, this same statement causes the error: 'invalid input
syntax for type double precision: "Volume"'.

If the keys are specified directly, it will still work as normal, but thows
the casting error when the keys are being selected from another table.

Works:
SELECT id, mytdata.key, mytdata.value::integer
FROM my_table as myt,
jsonb_each_text(myt.data) as mytdata
WHERE mytdata.key IN ( "week01", "week02", "week03" )
Casting Error:
SELECT id, mytdata.key, mytdata.value::integer
FROM my_table as myt,
jsonb_each_text(myt.data) as mytdata
WHERE mytdata.key IN ( SELECT key from week_key_table )