try/catch/break/finally doesn't reset exception stack

[vtjnash]

julia> let
           for i = 1:2
               try
                   throw("No, I am not the cause of your misery")
               catch
                   break
               finally
               end
           end
           error("HI")
       end

ERROR: HI
Stacktrace:
 [1] error(::String) at ./error.jl:33
 [2] top-level scope at ./REPL[8]:10
caused by [exception 1]
"No, I am not the cause of your misery"
Stacktrace:
 [1] top-level scope at ./REPL[8]:4

[c42f]

Odd; lowering is somehow broken for this form, but not for the same thing without the finally block. My tests in test/exceptions.jl don't appear to cover the three block syntax.

[c42f]

expand-try first lowers the three block version to the following nested form which is also broken if passed directly:

for i=1:1
    try
       try
           error("E1")
       catch
           break
       end
    finally
    end
end

[c42f]

Should be fixed in #31931 [edited to fix broken ref]