[NithinU2802]

This PR solves,

• Fixed the maze solver so it checks maze boundaries instead of trying to access cells outside the maze. The existing methods keep their current start and destination, and now return null if those positions don't fit the maze.
• Added overloads that let callers provide start and destination coordinates, along with checks for invalid coordinates and malformed mazes.
• Added tests for small mazes, both search strategies, invalid coordinates, and mazes with no path.
• Did code improvement to avoid duplication.

Closes #7671

• I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized it.
• All filenames are in PascalCase.
• All functions and variable names follow Java naming conventions.
• All new algorithms have a URL in their comments that points to Wikipedia or other similar explanations.
• All new algorithms include a corresponding test class that validates their functionality.
• All new code is formatted with clang-format -i --style=file path/to/your/file.java

[codecov-commenter]

Codecov Report

❌ Patch coverage is 97.22222% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 82.27%. Comparing base (a7a2441) to head (c85fdb2).

Files with missing lines	Patch %	Lines
.../com/thealgorithms/backtracking/MazeRecursion.java	97.22%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #7672      +/-   ##
============================================
+ Coverage     82.21%   82.27%   +0.05%     
- Complexity     8401     8431      +30     
============================================
  Files           843      843              
  Lines         26141    26145       +4     
  Branches       5100     5104       +4     
============================================
+ Hits          21493    21510      +17     
+ Misses         3854     3843      -11     
+ Partials        794      792       -2     

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