✨ Add multiday view option to web

[lavigarg-simform]

Description

This PR adds MultiDayView as a selectable calendar view option in the example app on web and introduces new customization parameters to MultiDayView.

What changed

Example app

• Added multiday to the CalendarView enum so users can switch to MultiDayView from the view selector on web.
• Added the corresponding label via translate.multidayView in the CalendarConfig widget.
• Wired MultiDayViewWidget into the CalendarViews routing so the example app renders it when multiday is selected.
• Removed the hard-coded maxWidth: 30 constraint from SideEventArranger() in MultiDayViewWidget.

MultiDayView / InternalMultiDayViewPage

• Added weekTitleBackgroundColor (Color?) to MultiDayView and InternalMultiDayViewPage to allow customizing the week title strip background. Falls back to themeColor.multiDayTileColor when not provided.
• Added backgroundColor propagation from MultiDayView down to InternalMultiDayViewPage, where it is applied directly on the page container (replaces the now-removed DecoratedBox wrapper).
• Removed the redundant DecoratedBox that previously wrapped the PageView.builder.
• Cleaned up dead commented-out code (updateRange(), showWeekEnds removal block).

CalendarEventData

• Fixed occursOnDate to use withoutTime consistently on both sides of comparisons, preventing false negatives caused by time-component mismatches.
• Minor formatting: moved @immutable annotation directly above the class declaration.

Constructor style

• Reformatted InternalMultiDayViewPage constructor to use the trailing-comma / one-parameter-per-line Dart style.

Checklist

• The title of my PR starts with a Conventional Commit prefix (fix:, feat:, docs: etc).
• I have followed the Contributor Guide when preparing my PR.
• I have updated/added tests for ALL new/updated/fixed functionality.
• I have updated/added relevant documentation in docs and added dartdoc comments with ///.
• I have updated/added relevant examples in examples or docs.

Breaking Change?

• Yes, this PR is a breaking change.
• No, this PR is not a breaking change.

Related Issues

No related issues.

[Copilot]

Pull request overview

This PR adds MultiDayView support to the example app’s web view selector and extends MultiDayView customization for week-title and page backgrounds, while also fixing date-only matching in CalendarEventData.

Changes:

• Added CalendarView.multiday routing/label support in the example web selector.
• Added weekTitleBackgroundColor and propagated page backgroundColor into InternalMultiDayViewPage.
• Updated occursOnDate to compare dates without time components and expanded MultiDayView documentation/changelog notes.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
lib/src/multi_day_view/multi_day_view.dart	Adds the new week-title background parameter and passes background colors into internal pages.
lib/src/multi_day_view/_internal_multi_day_view_page.dart	Applies page and week-title background colors inside each MultiDayView page.
lib/src/calendar_event_data.dart	Normalizes date comparisons in occursOnDate.
example/lib/widgets/multi_day_view_widget.dart	Removes the fixed side-event arranger max width.
example/lib/widgets/calendar_views.dart	Routes the new enum option to MultiDayViewWidget.
example/lib/widgets/calendar_configs.dart	Adds the localized multiday label to the view selector.
example/lib/enumerations.dart	Adds the multiday calendar view option.
doc/documentation.md	Documents new MultiDayView customization options.
CHANGELOG.md	Adds an unreleased entry for the new MultiDayView option.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[kavantrivedi]

Hey
Lavi, can you please check background in web. as it is different from mobile tablet view

[kavantrivedi]

Hey Lavi, can you please check background in web. as it is different from mobile tablet view

Working as expected