Make connect_timeout work with DNS resolution

[haukot]

Before it could timeout the connection process, but it still waits for DNS resolution, in some systems for a long time(e.g. on Alpine I see that connection timeouts only after 5 seconds).
It's possible to interrupt the name resolution in ruby 3.3+, tested on 3.3.4 (related issue https://bugs.ruby-lang.org/issues/19965)

irb(main):029* Benchmark.measure do
irb(main):030*   begin
irb(main):031*     Socket.tcp('host', 8080, connect_timeout: 0.01).close
irb(main):032*   rescue
irb(main):033*     puts 'No connection'
irb(main):034*   end
irb(main):035> end
irb(main):036> 
No connection
=> 
#<Benchmark::Tms:0x00007ff9aa0b7128
 @cstime=0.0,
 @cutime=0.0,
 @label="",
 @real=5.006601492001209,
 @stime=0.00031999999999987594,
 @total=0.0014850000000001806,
 @utime=0.0011650000000003047>

irb(main):041* Benchmark.measure do
irb(main):042*   begin
irb(main):043*     Timeout.timeout(0.01) { Socket.tcp('host', 8080).close }
irb(main):044*   rescue
irb(main):045*     puts 'No connection'
irb(main):046*   end
irb(main):047> end
irb(main):048> 
No connection
=> 
#<Benchmark::Tms:0x00007ff9a9f27678
 @cstime=0.0,
 @cutime=0.0,
 @label="",
 @real=0.010416228004032746,
 @stime=0.000212000000000101,
 @total=0.0009450000000004177,
 @utime=0.0007330000000003167>

[haukot]

Without this tests were failing with

Error:
CompilerTest#test_freshness_on_compile_success:
NameError: uninitialized constant CompilerTest::OpenStruct

e.g. on https://github.com/rails/webpacker/actions/runs/9956692322/job/27507151674#step:4:83