Jsonrpc: improve performance of process filter function

Jsonrpc: improve performance of process filter function

`run-at-time' keeps `timer-list' list sorted by inserting each
timer based on the timer value.  This means that
`timer--time-less-p' needs is executed ~N*N/2 times for each N
pending messages.  This means that jsonrpc becomes unusable
for connections that generate a lot messages at the same time.

* lisp/jsonrpc.el (Version): Bump to 1.0.25.
(jsonrpc--process-filter): Improve performance by activating
timers in a different order.  (Bug#69241)