Roll PDFium from 40d92c45b3aa to d06523d84bb3 (7 revisions)

https://pdfium.googlesource.com/pdfium.git/+log/40d92c45b3aa..d06523d84bb3

2023-11-30 thakis@chromium.org Make WideString's FromUTF16BE / FromUTF16LE do surrogate fusing
2023-11-30 tsepez@chromium.org Use dedicated struct instead of std::pair in ExecuteBoolScript()
2023-11-30 tsepez@chromium.org Remove out-parameter from CFXJSE_Context::ExecuteScript()
2023-11-30 thestig@chromium.org Simplify tests that use FORM_GetSelectedText()
2023-11-29 thestig@chromium.org Use spans in more places
2023-11-29 thestig@chromium.org Add pdfium::as_byte_span() helper
2023-11-29 tsepez@chromium.org Remove out parameter from DynPropGetterAdapter().

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/pdfium-autoroll
Please CC dhoss@chromium.org,pdfium-deps-rolls@chromium.org,thestig@chromium.org on the revert to ensure that a human
is aware of the problem.

To file a bug in PDFium: https://bugs.chromium.org/p/pdfium/issues/entry
To file a bug in Chromium: https://bugs.chromium.org/p/chromium/issues/entry

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

Bug: None
Tbr: pdfium-deps-rolls@chromium.org
Change-Id: Ia94649e6c70dc741a00d37bf3a7f17bc6404ef97
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5074441
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Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1231245}