cmd/compile: change the "bogus line" to be 1

The previous value was "too bogus" and caused objdump to crash.
Updated infinite loop test results (only run if -args -f) in ssa/debug_test.go
Probably also fixes #36621 but that bug needs more info to tell for certain.

Fixes #36570

Change-Id: I51144641d25d559308a98d726d87806bd340cc5a
Reviewed-on: https://go-review.googlesource.com/c/go/+/215297


Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>