Update `ConfigData` so that it signal if is considered optional. This
update allows `ConfigDataLocationResolvers` to return results that
behave in the same way as `optional:` prefixed locations without the
user themselves needing to prefix the location string.

Closes gh-25894

* pr/25868:
  Polish 'Allow remote devtools access with Spring Security'
  Allow remote devtools access with Spring Security

Closes gh-25868

See gh-25868

Update `ManagementWebSecurityAutoConfiguration` so that the
`managementSecurityFilterChain` bean has an explicit order.

Prior to this commit, the `managementSecurityFilterChain` would override
the `securityFilterChain` in `RemoteDevtoolsSecurityConfiguration` which
would prevent the remote devtools endpoint from being accessed.

See gh-25868

Update `StandardConfigDataLocationResolver` to deal with patterns when
resolving empty directories. This update also fixes the handling of
mandatory pattern locations which would previously throw an exception.

The error message returned when a location with a pattern does not
contain any subdirectories has also been improved.

Fixes gh-26468
Fixes gh-26577
Fixes gh-26415

Update `Profiles` so that any profiles set programmatically on the
`Environment` are merged with `spring.profiles.active` properties.

Fixes gh-26151
Co-authored-by: Phillip Webb <pwebb@vmware.com>

Closes gh-26428

Closes gh-26083

* gh-26205:
  Polish "Detect use of spring.profiles.include as a YAML list"
  Detect use of spring.profiles.include as a YAML list

Closes gh-26205

See gh-26205

See gh-26205

Closes gh-26572

Closes gh-26569

Closes gh-26570

Closes gh-26479

Closes gh-26525

* gh-25944:
  Polish "Document use of module replacements to swap dependencies"
  Document use of module replacements to swap dependencies

Closes gh-25944

See gh-25944

See gh-25944
Signed-off-by: Caleb Cushing <xenoterracide@gmail.com>

Closes gh-26523

* gh-26446:
  Remove unnecessary semicolon

Closes gh-26446

See gh-26446

Closes gh-26521

* gh-26227:
  Polish "Improve documentation of TestRestTemplate's fault tolerance"
  Improve documentation of TestRestTemplate's fault tolerance

Closes gh-26227

See gh-26227

See gh-26227

* gh-26465:
  Remove add-opens workaround in ToolchainPlugin

Closes gh-26465

See gh-26465

Closes gh-26519

Closes gh-26518

Closes gh-26517

Closes gh-26516

Closes gh-26515

Closes gh-26514

Closes gh-26513

Closes gh-26512

Closes gh-26511

Closes gh-26510

Closes gh-26509