Avoid version warnings with PyQtWebEngine-Qt5 5.15.17

With PyQtWebEngine-Qt5 5.15.17 (Qt 5.15.19), we seem to run into similar issues
like we already did with Qt 6.5:

https://github.com/qutebrowser/qutebrowser/issues/7624#issuecomment-1474008470
9cb54b2099

However, skipping the ELF test is not enough, as we also get warnings
at runtime (as we don't have any API to get the version at runtime).

We don't care much about Qt 5 at this stage, so let's just not output
warnings in that case (and nothing in the code should care about the exact
QtWebEngine patch level beyond 5.15.2 anyways).

For most user-facing things, we *can* get the exact version number from
the user-agent, so this should not actually affect much.

qutebrowser/browser/webengine/webenginesettings.py

@@ -453,8 +453,19 @@ def _init_default_profile():
 
     init_user_agent()
     ua_version = version.qtwebengine_versions()
+
+    logger = log.init.warning
+    if machinery.IS_QT5:
+        # With Qt 5.15, we can't quite be sure about which QtWebEngine patch version
+        # we're getting, as ELF parsing might be broken and there's no other way.
+        # For most of the code, we don't really care about the patch version though.
+        assert (
+            non_ua_version.webengine.strip_patch() == ua_version.webengine.strip_patch()
+        ), (non_ua_version, ua_version)
+        logger = log.init.debug
+
     if ua_version.webengine != non_ua_version.webengine:
-        log.init.warning(
+        logger(
             "QtWebEngine version mismatch - unexpected behavior might occur, "
             "please open a bug about this.\n"
             f"  Early version: {non_ua_version}\n"

qutebrowser/utils/version.py

@@ -594,6 +594,7 @@ class WebEngineVersions:
         utils.VersionNumber(5, 15, 16): (_BASES[87], '119.0.6045.123'),  # 2023-11-07
         utils.VersionNumber(5, 15, 17): (_BASES[87], '123.0.6312.58'),  # 2024-03-19
         utils.VersionNumber(5, 15, 18): (_BASES[87], '130.0.6723.59'),  # 2024-10-14
+        utils.VersionNumber(5, 15, 19): (_BASES[87], '135.0.7049.95'),  # 2025-04-14
 
 
         ## Qt 6.2

tests/unit/misc/test_elf.py

@@ -11,6 +11,7 @@ from hypothesis import strategies as hst
 
 from qutebrowser.misc import elf, binparsing
 from qutebrowser.utils import utils
+from qutebrowser.utils.utils import VersionNumber
 
 
 @pytest.mark.parametrize('fmt, expected', [
@@ -45,7 +46,8 @@ def test_result(webengine_versions, qapp, caplog):
     pytest.importorskip('qutebrowser.qt.webenginecore')
 
     versions = elf.parse_webenginecore()
-    if webengine_versions.webengine >= utils.VersionNumber(6, 5):
+    qtwe_version = webengine_versions.webengine
+    if qtwe_version == VersionNumber(5, 15, 19) or qtwe_version >= VersionNumber(6, 5):
         assert versions is None
         pytest.xfail("ELF file structure not supported")