XML parsing changes breaking compatibility in v4.48.1

[Syquel]

Describe the bug
Before v4.48.1 XML namespaces were silently ignored, but #2487 introduced namespace-aware processing.
This change is backwards-incompatible and breaks existing logic which relies on the former behavior of yq to ignore XML namespaces.
Because there is no yq flag to control this behavior it is not possible to write yq parsers which work for v4.48 as well as v4.47.

Version of yq: 4.48.1
Operating system: linux
Installed via: binary release

Input XML
repository2-3.xml

<?xml version='1.0' encoding='utf-8'?>
<sdk:sdk-repository xmlns:sdk="http://schemas.android.com/sdk/android/repo/repository2/03" xmlns:common="http://schemas.android.com/repository/android/common/02" xmlns:sdk-common="http://schemas.android.com/sdk/android/repo/common/03" xmlns:generic="http://schemas.android.com/repository/android/generic/02" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <remotePackage path="cmdline-tools;13.0">
    <type-details xsi:type="generic:genericDetailsType"/>
    <revision>
      <major>13</major>
      <minor>0</minor>
    </revision>
    <display-name>Android SDK Command-line Tools</display-name>
    <uses-license ref="android-sdk-license"/>
    <channelRef ref="channel-0"/>
    <archives>
      <archive>
        <complete>
          <size>157033049</size>
          <checksum type="sha1">dcc85e607e53315fa67de2884ff7f623c60f15ae</checksum>
          <url>commandlinetools-linux-11479570_latest.zip</url>
        </complete>
        <host-os>linux</host-os>
      </archive>
    </archives>
  </remotePackage>
</sdk:sdk-repository>

Command
The command you ran:

yq --input-format xml --output-format yaml '.sdk-repository' < repository2-3.xml

Actual behavior
The result is null for v4.48.2

null

Expected behavior
The result should contain the content of the sdk-repository XML node as it did with 4.47.

+@xmlns:sdk: http://schemas.android.com/sdk/android/repo/repository2/03
+@xmlns:common: http://schemas.android.com/repository/android/common/02
+@xmlns:sdk-common: http://schemas.android.com/sdk/android/repo/common/03
+@xmlns:generic: http://schemas.android.com/repository/android/generic/02
+@xmlns:xsi: http://www.w3.org/2001/XMLSchema-instance
remotePackage:
  +@path: cmdline-tools;13.0
  type-details:
    +@xsi:type: generic:genericDetailsType
  revision:
    major: "13"
    minor: "0"
  display-name: Android SDK Command-line Tools
  uses-license:
    +@ref: android-sdk-license
  channelRef:
    +@ref: channel-0
  archives:
    archive:
      complete:
        size: "157033049"
        checksum:
          +content: dcc85e607e53315fa67de2884ff7f623c60f15ae
          +@type: sha1
        url: commandlinetools-linux-11479570_latest.zip
      host-os: linux

Additional context
The new behavior should be locked behind a yq flag --xml-namespaces=true or similiar to preserve the former behavior.

To get the same result in v4.48 the following command works:

yq --input-format xml --output-format yaml '."sdk:sdk-repository"' < repository2-3.xml

Unfortunately the same command does not work in v4.47.

[Syquel]

I just realized that there is already the flag --xml-keep-namespace and setting it to false allows to preserve the "bugged" behavior of yq v4.47.

Sorry for the bug report.