Better error message when no path can be found in Graph decomposition

When the graph solver cannot find a path to the requested gate_set, the underlying MLIR pass throws an uncaught C++ exception. When this happens, you may see many lines on the screen before you reach the error message below.

[libc++abi: terminating due to uncaught exception of type
  DecompGraph::Core::GraphSolverFailedError: Decomposition rule not found for operator](libc++abi: terminating due to uncaught exception of type DecompGraph::Core::GraphSolverFailedError: Decomposition rule not found for operator 'Toffoli[w:3][p:0]')

Reproduce:

import pennylane as qp
from catalyst import qjit
from catalyst.passes import graph_decomposition

@qjit(capture=True)
@graph_decomposition(gate_set={qp.RX})
@qp.qnode(qp.device("lightning.qubit", wires=3))
def t(): 
    qp.Toffoli([0,1,2])
    return qp.state()

print(t())

Start with the graph_decomposition entry point and reproduce the failure using the Python example in the issue. Trace the underlying MLIR pass and GraphSolverFailedError handling; done means an unavailable path produces a concise handled error instead of an uncaught C++ exception and excessive output.