[ruby-core:117451] [Ruby master Bug#20327] Time.new behaves differently when passing a zone as timezone object

Issue #20327 has been updated by nagachika (Tomoyuki Chikanaga).

Backport changed from 3.0: REQUIRED, 3.1: REQUIRED, 3.2: REQUIRED, 3.3: DONE to 3.0: REQUIRED, 3.1: REQUIRED, 3.2: DONE, 3.3: DONE

ruby_3_2 e6bf38a6e7fbae0097fdf51e3c752820a2c58ae4 merged revision(s) d3279a0c11ca45ca85027e7eb74dc4aac52c478b.

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Bug #20327: Time.new behaves differently when passing a zone as timezone object
https://bugs.ruby-lang.org/issues/20327#change-107835

* Author: davekaro (Dave Kroondyk)
* Status: Closed
* ruby -v: ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [arm64-darwin23]
* Backport: 3.0: REQUIRED, 3.1: REQUIRED, 3.2: DONE, 3.3: DONE
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Time.new with a timezone object for the zone argument produces incorrect utc_offset when passing seconds as a Rational.

``` ruby
require "tzinfo"

# This correctly outputs 0 as the utc_offset
puts Time.new(2024, 1, 1, 23, 59, 59.9r, "UTC").utc_offset                           # => 0

# Inspecting the time looks correct 
puts Time.new(2024, 1, 1, 23, 59, 59.9r, "UTC").inspect                              # => "2024-01-01 23:59:59.9 UTC"

# Using a timezone object for the zone, results are different
puts Time.new(2024, 1, 1, 23, 59, 59.9r, TZInfo::Timezone.get("Etc/UTC")).utc_offset # => (9/10)

# Inspecting the time object reveals the odd offset
puts Time.new(2024, 1, 1, 23, 59, 59.9r, TZInfo::Timezone.get("Etc/UTC")).inspect    # => "2024-01-01 23:59:59.9 +000001"

```






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